Used to define that creepy uncle you have who isn't really your uncle at all. He usually is an old friend of your father's, has a mustache straight out of a porno, and drives an old white van with no windows (a common variation is a van originally equipped with windows, which have now been spray-painted over).
My peduncle is always rambling on about free candy and puppies
Dude, I think I just saw my peduncle on the news.
Really?
Yeah, he's wanted for gross sexual imposition.
(n.) A large posterior belonging to a woman (esp. African-American),
see also: Badonkadonk
Etymology: The term was used in African American Vernacular English (AAVE) since the 1990s. In the 1990s, a new species of whale (Rice's whale) was discovered of the coast of Louisiana, and need reports included references to a large posterior "peduncle" hump. The term "peduncle-butt" was adopted by the African-American community to refer to a woman with "an ass like a whale". It transformed into the onomatopoeiac "badonkadonk" by those unfamiliar with its origin. The new word was popularized by Keith Murray's song "Fatty Girl" (2001), and later Trace Adkins, "Honkey Tonk Badunkadunk".