cler·i·hew noun: clerihew; plural noun: clerihews
a short comic or nonsensical verse, typically in two rhyming couplets with lines of unequal length and referring to a famous person.
The Gingerbread man Wants to start a ban. For on every Christmas day They eat him all away.
My buddy Jim Is always sipping gin. And when the light goes out, He grabs the pint of stout!
The preacher man preaches From the pulpit where he teaches — False gods and whiskey, Oh Lord have mercy!