Because they have BOOOOgers.
Nothing he just waved. Sea what I did there? Sorry sometimes I get a bit carried away, it like a tsunami of puns. Water these puns! they're horrible, I'll stop now.
Because umbrellas can't walk
The phrase I went through a whole box of tissues watching that film. is a good place to start.
Because he had a stinking cold!
Boo, DUH!!!
An exor- .