Unman, Wittering and Zigo

[John Ebony's first day teaching. The students are taking turns reading from a history book]

Wittering:
[faintly] hypotenuse... hypotenuse... hypotenuse

John Ebony:
Who's that muttering?

Wittering:
Me, sir.

Lipstrob:
He can't help it, sir.

Cuthbun:
He says 'hypotenuse' all the time, sir.

Ankerton:
He likes the word.

Aggeridge:
Mr. Pelham said he was 'hypotenus-ed' by it, sir! [general laughter]

John Ebony:
Stop it! Very well, you've had ample warning. This form will kept in on Saturday afternoon from 2:30.

Cloistermouth:
It's not a good idea, sir.

John Ebony:
Why is that, Cloistermouth?

Cloistermouth:
Mr. Pelham tried it once, sir.

Terhew:
The week before last.

Cloistermouth:
And that's why we killed him, sir.

[long silence]