During a visit to the funny farm, a visitor asked the Director what the criterion was which defined whether or not a patient should be institutionalized.
" Well, said the director, we fill up a bathtub, then we offer a teaspoon, a teacup and a bucket to the patient and ask him or her to empty the bathtub."

" Oh, I understand, said the visitor. A normal person would use the bucket because it's bigger than the spoon or the teacup."

" No, said the director, a normal person would pull the plug. Do you want a bed near the window ? "