Because it's a catastrophe :-) Yeah, ok, I'll be going now. EDIT: removed explanation.
Nah, I'm still working on it.
He wanted to have drinks on the house.
The lesser of two weevils.
Because the bicycle was two tired.
It was on a strict diet of worms. edit: changed pronoun to avoid ambiguity
A punkin. Edit: and apparently not me.
He had a staff infection...
Because he was outstanding in his field.
Atrophy.
A catastrophe !