guy 1: did you go on that date last night?  guy 2: sure did, we went back to hers, she even let me fudge knuckle her
to fist a male or female anally
"guy 1: did you go on that date last night?  guy 2: sure did, we went back to hers, she even let me fudge knuckle her" What is the definition of "fudge knuckle"?