What is Knuckle Butter?
1.
Noun, the slimy substance that seeps out from between the fingers of a closed fist after a person has ejaculated in their own hand.
Jack used a tissue to wipe the knuckle butter off of his hand after he jacked off.
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Random Words:
1.
Often shortened to RP/Arpie.
The act of inserting one's finger(s) inside the participant's anal.
Example 1:
Guy 1 - "D..