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!!!