lower unit

A nice female rear end that is unusually close to the ground when she walks, possibly because of short legs. More commonly used in reference to the storage compartment on a fishing boat.
(Girl walks by)
Guy 1: Godzilla, check out the lower unit!
Guy 2: Damn, that IS a lower unit!
by exitflagger April 25, 2008
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blown lower unit

when a woman has a droopy vagina
her twat looks like a blown lower unit
by thebigred1 June 23, 2013
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