The movie Raanjhana used this concept in a song called, Aye Sakhi. A girl goes on describing something that would lead the listener to conclude that she is talking about her lover, but then she goes back on her words and says she meant something else. One collection of Amir Khusrau's is here on this link. I don't know if Khusrau invented this kind of riddle, because the book I was reading mentioned this as a typical Braj riddle.
http://www.angelfire.com/sd/urdumedia/kemukar.html
Ardh nis wah aayo bhaun
Saundarta Barnai kahi kaun
Nirkhat hi man bhayo anand
Kyon sakhi sajan, na sakhi chand
He came in midnight, who can describe his beauty,
As soon as I beheld him I was filled with joy,
Who your husband/lover No the moon
Ghul gayi gaanth na kholen khule
Jahan tahan mere sang dule
Hiye Birajat hoye na bhaar
Kyon sakhi sajan, na sakhi haar
Daasi de main mol mangayo
Ang ang sab khol dhikhayo
Wa So(n) mero bhayo ju mel
Kyon sakhi sajan na sakhi tel
Main apno man dinon ain
Sundar roop suhave bain
Dhig te kabhun na karihon juda
Kyon sakhi sajan, na sakhi suaa
Va bin chit chahun dis dole
Chaatak jo puni piya piya bole
Pralay hoy aave nahin geh
Kyon sakhi sajan, na sakhi meh (baarish)
Raat dina ja kau hai gaun
Khule dwaar aawe mere bhaun
Va kau harsh bataun kaun
Kyon sakhi sajan, na sakhi paun
Baat chalat mero anchal gahe
Meri sune na apni kahe
Na kachhun mo so jhagda jhaanta
Kyon sakhi sajan, na sakhi kaanta
Baat chalat main pada jo paaya
Khota khara nahin parakhaya
Haath lege tab hove kaisa
Kyon sakhi sajan, na sakhi paisa
Chhota mota adhik suhana
Jo dehe so hoy diwana
Kabhun baahar kabhun andar
Kyon sakhi saajan na sakhi Bandar
Ati surang hai rang rangeelo
Hai gunwant bahut chatkeelo
Ram bhajan bin kabhi na sota
Kyon sakhi saajan, na sakhi tota
Aath peher mere dig rahe
Meethi pyaari baatein kahe
Syam baran aru raate naina
Kyon sakhi sajan, na sakhi maina
Ati sundar jag chaahat jaako
Main bhi dekh lubhaani wako
Dekhat roop bhayo jo tona
Kyon sakhi saajan, na sakhi sona
Nis din aangan oobho rahe
Chaanh dhhop sab upar sahe
Vaa ke dekh lage na bhhokh
Kyon sakhi saajan, na sakhi rookh (ped)
Jab aawe tab jal bhar laawe
Tan man ki sab tapan bujhawe
Man ka bhaari tan ka chhota
Kyon sakhi saajan, na sakhi lota
Dhamak chadhe sudh budh bisrawe
Daabat jaangh bahut sukh paawe
Ati balwant dinani ko thoda
Kyon sakhi saajan, na sakhi ghoda
Lambi lambi dagon ju aawe
saare din ki haus bujhawe
Uthake chala to pakda khoonth
Kyon sakhi saajan, na sakhi uunt
Door door karun to daude aawe
Khan aangan khan baahr jaawe
Dehal (dehri) chhod kahun nahin sota
Kyon sakhi saajan, na sakhi kutta
Harit rang mohi laagat naako
Va bin sab jab laagat feeko
Utarat chadat marorat ang
Kyon sakhi saajan, na sakhi bhaang
Sigree rain chaati pe rakha
Uss ka ras kas maine chakha
Bhor bhaya tab diya utaar
Kyon sakhi saajan na sakhi haar
Nis din mere ur par rahe
Dou kuch le gaadhe gahe
Utarat chadat karat jhakjholi
Kyon sakhi saajan, na sakhi choli
Chatechamaase mo ghar aawe
Aap hile aur mohi hilae
Naam let aawe mohi sanka
Kyon sakhi saajan, na sakhi pankha
Sigree rain so mo sang jaagyo
Bhor bhaye te bicchran laagyo
Wa ke bicchran faate hiya
Kyon sakhi saajan, na sakhi diya
Dekhan main wah gaath gatheela
Chaakhan main wah adhik raseela
Mukh chumo ko ras ka bhaanda
Kyon sakhi sajan, na sakhi ganna (sugar cane)
http://www.angelfire.com/sd/urdumedia/kemukar.html
Ardh nis wah aayo bhaun
Saundarta Barnai kahi kaun
Nirkhat hi man bhayo anand
Kyon sakhi sajan, na sakhi chand
He came in midnight, who can describe his beauty,
As soon as I beheld him I was filled with joy,
Who your husband/lover No the moon
Ghul gayi gaanth na kholen khule
Jahan tahan mere sang dule
Hiye Birajat hoye na bhaar
Kyon sakhi sajan, na sakhi haar
Daasi de main mol mangayo
Ang ang sab khol dhikhayo
Wa So(n) mero bhayo ju mel
Kyon sakhi sajan na sakhi tel
Main apno man dinon ain
Sundar roop suhave bain
Dhig te kabhun na karihon juda
Kyon sakhi sajan, na sakhi suaa
Va bin chit chahun dis dole
Chaatak jo puni piya piya bole
Pralay hoy aave nahin geh
Kyon sakhi sajan, na sakhi meh (baarish)
Raat dina ja kau hai gaun
Khule dwaar aawe mere bhaun
Va kau harsh bataun kaun
Kyon sakhi sajan, na sakhi paun
Baat chalat mero anchal gahe
Meri sune na apni kahe
Na kachhun mo so jhagda jhaanta
Kyon sakhi sajan, na sakhi kaanta
Baat chalat main pada jo paaya
Khota khara nahin parakhaya
Haath lege tab hove kaisa
Kyon sakhi sajan, na sakhi paisa
Chhota mota adhik suhana
Jo dehe so hoy diwana
Kabhun baahar kabhun andar
Kyon sakhi saajan na sakhi Bandar
Ati surang hai rang rangeelo
Hai gunwant bahut chatkeelo
Ram bhajan bin kabhi na sota
Kyon sakhi saajan, na sakhi tota
Aath peher mere dig rahe
Meethi pyaari baatein kahe
Syam baran aru raate naina
Kyon sakhi sajan, na sakhi maina
Ati sundar jag chaahat jaako
Main bhi dekh lubhaani wako
Dekhat roop bhayo jo tona
Kyon sakhi saajan, na sakhi sona
Nis din aangan oobho rahe
Chaanh dhhop sab upar sahe
Vaa ke dekh lage na bhhokh
Kyon sakhi saajan, na sakhi rookh (ped)
Jab aawe tab jal bhar laawe
Tan man ki sab tapan bujhawe
Man ka bhaari tan ka chhota
Kyon sakhi saajan, na sakhi lota
Dhamak chadhe sudh budh bisrawe
Daabat jaangh bahut sukh paawe
Ati balwant dinani ko thoda
Kyon sakhi saajan, na sakhi ghoda
Lambi lambi dagon ju aawe
saare din ki haus bujhawe
Uthake chala to pakda khoonth
Kyon sakhi saajan, na sakhi uunt
Door door karun to daude aawe
Khan aangan khan baahr jaawe
Dehal (dehri) chhod kahun nahin sota
Kyon sakhi saajan, na sakhi kutta
Harit rang mohi laagat naako
Va bin sab jab laagat feeko
Utarat chadat marorat ang
Kyon sakhi saajan, na sakhi bhaang
Sigree rain chaati pe rakha
Uss ka ras kas maine chakha
Bhor bhaya tab diya utaar
Kyon sakhi saajan na sakhi haar
Nis din mere ur par rahe
Dou kuch le gaadhe gahe
Utarat chadat karat jhakjholi
Kyon sakhi saajan, na sakhi choli
Chatechamaase mo ghar aawe
Aap hile aur mohi hilae
Naam let aawe mohi sanka
Kyon sakhi saajan, na sakhi pankha
Sigree rain so mo sang jaagyo
Bhor bhaye te bicchran laagyo
Wa ke bicchran faate hiya
Kyon sakhi saajan, na sakhi diya
Dekhan main wah gaath gatheela
Chaakhan main wah adhik raseela
Mukh chumo ko ras ka bhaanda
Kyon sakhi sajan, na sakhi ganna (sugar cane)