What do you call an alligator wearing a vest?

So my daughter darts in just as I am about to settle into some work. Second son is a boy scout - a species notorious for their bad jokes. He has corrupted my daughter's humor.

Daddy, what do you call an alligator wearing a vest?

Alright. What do you call an alligator wearing a vest?

An investigator!

Oh dear. Shrieks of laughter as she retreats to some conversation with friends which I suspect will throw up yet further monstrosities.