Stump the pump
When you are unable to produce cum during intercourse
Man last night I had whiskey dick and it really did "stump the pump."
stump pump
voilently pumping your fist in and out of someones asshole up to and including your wrist so your arm looks like a stump
"ya i made him my bitch by stump pumpin' the bastard till he agreed"
The 3 stump pump
When you fuck your misses with a randomers stump an make her cum in 3 pumps
I did the 3 stump pump to my Scottish bird last night I screamed like a pterodactyl