Because their husbands have hollow-weenies.
Don't bite any witches!
She has a big "W" embroidered on her pyjamas!
5-year-old: A baby. Woman: What kind of baby 5-year-old: A human one. Nailed it.
Because his mother was in a jam.
They're hard to get started, they emit noxious odors, and half the time they don't work.
A widow.
Because he had a Halloweenie! (Hollow-weenie)
They have hollow weenies!