butt knuckle
(noun) The popping sound made by an explosive fart. A crisp and short passage of gas from ones butt.
Excuse me while I crack my butt knuckle.
butt knuckle
tailbone
I fell off my board and smashed my butt knuckle
Butt-knuckle
1.)The smelly brown knuckle of the finger or thumb inserted in someones butt. 2.)The person inserting said finger or thumb 3.) The act of inserting said finger or thumb in one's butt, possibly due to boredom or lack of interest. 4.)Someone who complains alot but does nothing and/or offers no suggestions about how to remedy the problem he/she is complaining about.
Dave is such a butt-knuckle that rather than do something useful he'll just sit there with his thumb up his butt complaining about everything. Hey can you help me with this right after you go wash the stink off of your butt-knuckle. Don't go butt-knuckle on us now we may still need your help before it's all over.
Butt Knuckle
When a male wears his pants/shorts extra tight and his balls are showing. The opposite of Camel Toe.
Check out the Butt Knuckle on that guy!!!
bustin' butt knuckles
The consensual act of having aggressive anal sex with someone who has horrific hemorrhoids in order to break them down
Angie knew when she had got hemorrhoids again it was time for Peter to start bustin' butt knuckles to get some relief
Popping your butt knuckle
Farting or getting raped in the ass by a large shemale.
Dude that one website you sent me to last night was digusting, I didn't know shemales could be Popping your butt knuckle.
knuckle butt
To slip one's knuckle into the crack of an unsuspecting victim. Similar to a credit card but using the knuckle.
When Sally bent down to pick up her shoes, Bryan reach over and gave her the 'ole knuckle butt.