1 definition by RammWolf

1
knuckle boom
A method of vaginal stimulation involving a clenched fist and a bucket of lube.
I have her the ole knuckle boom last night. She came almost immediately!
by RammWolf April 18, 2017
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• © 1999-2021 Urban Dictionary ® • advertise • terms of service • privacy • dmca • bug report • help • blog • data subject request