A cow was kept for viva.

School student: Its a cow.

College student: Perhaps this is a cow.

University Student: This may be cow or a hypopigmented buffalo.

PHD Student: This may be a hypertrophied goat or an atrophied elephant with congenital anomalies.

Moral: The more you study, the more your common sense decreases. =D

Hit ‘like’ if u r agree.. !!