Mr. Bean

Student:
Done your revision?

Mr. Bean:
Uh, oh yes. I concentrated on trigonomentry.

Student:
I-I-I-I've done calculus, mainly.

Mr. Bean:
Oh! I believe they concentrated on calculus last year!

Student:
Oh! Oh dear!

[Mr. Bean snickers]

Instructor:
Quiet, ladies and gentlemen. The exam will commence in two minutes

[The student beside him places a pen on the table] (please edit this line)

Instructor:
Ladies and gentlemen, you may open the envelopes containing your papers. The exam starts... now.