"Let's go down", said Tom condescendingly.
 
"Rather cold today", said Tom icily.
 
"What math exam?", said Tom nonplussed.
_____________________________________________________________________


While giving a lecture on the mechanics of momentum and kinetic energy
transfer, my physics professor noticed a student busily snoozing in the
fourth row of the auditorium. He turned to a girl sitting in the first
row and asked her what the result of a collision between two particles
with masses, velocities, and trajectories that he specified would be.
After a few seconds of thinking and calculating she came up with the
correct answer.
 
The professor then awoke the sleeping student and said, "You! Same
question!"
 
The student, a bit stunned and bleary eyed, looked around and replied,
"Same answer."
 
After the laughter died down the professor turned around and said, "OK,
you got me on that one, I won't call on you again...