A hoochie munchkin is a beer store employee who wears big hoop earings and wears very short skirts. She tends to have a very high pitched voice (like a munchkin), and hooches herself out to random customers!
Male genitals in the flaccid state. Excess skin causes it to resemble a dwarf wearing an oversized trench coat, potato sack or loosesock. Thus giving it a frumpy appearance.
All was well and good at the public pool until the FrumpyMunchkin made an appearance and got my season pass revoked.