Because they always bring boos.
Namaste home tonight.
Invite an accountant.
Toad was a fungi.
Rave at the party.
Because when he asked his wife how many eggs to buy, she said 4!
An AYE-Phone. (Joke brought to you by a 5 year old)
There are two answers: Time and Boo (from Mario games).
They would steal all the boos.
A recipe spook.
They woooooooOOOOOOOooooo them.