Psychology on Mouse

Psychology ka practical ho rha tha.....
Professor ne Ek Chuhe (Mouse) Ke Liye..
ek taraf cake or doosri taraf chuhia rakh di,
Chuha Foran Cake Ki taraf lapka
Dusri Bar Cake ko badal kar Roti Rakhi
Chuha Roti Ki Taraf Lapka.
Is tarah kai bar Food Item Badle,
Magar Chuha har baar Food ki taraf bhaga.

Professor :bus sabit ho gya ke bhukh hi sub se badi taqat h.
Itne me last row se 1 awaz aai ek LADKE ki:

"sir ji Ek baar chuhiya badal ke bhi dekh lo,ho sakta h wo uski behan ho.........?"