knuckleduster

Someone who farts with a finger in their Ass. Knuckledusting isn't sexual in nature, it is much more closely related to fart sniffing or other Anal Olympic Events. There is a correlation between this activity and growing up in a trailer. This activity was almost certainly invented in the 70's when video games were all but non-existent and drugs were, well, the same as today

Anybob: Hey Bubba!
Bubba: Awwwe haw
Anybob: Putcho fanger in mah butt ho
Bubba: Awwwe haw
Anybob: BRRAAAAAAARRRKKKTTtttwwweeeeeeuuuuueeee!
Bubba: Awwwe mayn! Yuz a low down no good knuckleduster! Hurr hurr hurr!!!

by funk potato September 4, 2009

knucklebuster

One who masturbates frequently

Bob often thought about his sisters friends when he masturbated;he was a total knucklebuster

by Alastair636 April 28, 2006

knucklebuster

Adj.

Usually pertaining to butch lesbians, a knucklebuster is someone who forcefully, and rapidly inserts their fingers (usually 2-3) into a woman's vagina, and in doing so they injure the joints of said fingers. Medically speaking, it's usually a small strain in a joint, not a knuckle, but the nomenclature holds steadfast.

A derogatory reference to a lesbian, or a girl who won't put out right away

The direct result of hardcore "fingerbanging"

Dude A: Did you hook up with that girl?
Bummed Dude: No, she was a goddamned knucklebuster

by Spacetits May 4, 2006

Knucklebuster

i.e. Knuckledragger

by Anonymous April 25, 2003

Knuckleduster

A double jointed reverse hand job.

Jim said his dick was bruised, because he got a knuckleduster from a circus freak show.

by smingleton May 7, 2019