a student came in late for an exam, sat in the front row next to a smart looking fellow. he forgot to study and said to the guy next to him "hey.. can you show me the answer to #1 ?" the other dude looked at him funny, again he tries "dont be an arse dude, show me please !", and he showed him the first answer quickly,
then a few minutes pass, he says "can i just see how you're supposed to do number 2 ?", the other fellow again isnt in the mood for cheating, "dude, dont be an arse, i just need to see one bit", and he shows him the next answer,
now he asks "hey.. i need one equation from number three to solve it", again the smart lad hesitates, "come on man, just this one equation, dont be an arse", he shows him number three... and so it went for more than half the exam...
the next day he had an oral exam, he went towards the room where the professor was, opened the door, and saw the same smart fellow in the room (he was the professor) , closed the door, started walking the other way when the professor opens the door and exclaims "come inside dude, you have an oral exam, dont be an arse!" with a grin on his face