to finger-fuck a girl, aka give her a hand job, finger her, etc.
i pulled this well fit girl last night, and she let me feed the donkey
I was going to feed the pony, but she was on the rag, so i had to feed the donkey instead.
stimulation of a man’s anus with the hand in a manner similar to feeding a hungry donkey; the male equivalent of “feeding the horse”
Jay was feeding the donkey with his hand down the back of Ray’s jeans while Ray gave him head.
To masturbate (derived from the wrist motion of throwing seed in a trough)
see: Feed the ducks
I haven't anything to do Saturday night. I think I'll just sit home and feed the donkey.