Feed The Bird 

Not quite fisting someone, where you have all 4 fingers and thumb inserted, but are only able to achieve penetration up to the base of the fingers.

Etymology: Put your fingers and thumb together so they all meet at the tips. Include a back-and-forth motion from the wrist, and your hand looks like a bird eating.

"Brah, I took that chick home last night."
"Oh yeah, did you get laid?"
"Nah. I did feed the bird, though."

Feed The Bird by levarselosmonos February 19, 2010

Feed the bird 

For people who act a fool, so much so, it is as if, they wanted you to give them both middle fingers.

Just keep Feeding the bird and see where that gets you. (all the while, giving them the middle finger) go ahead, Feed the bird.

Feed the bird by Glassmonkey38 April 15, 2020