frolicking eel Share definition Flag The act of sliding one's penis rhythmically back and fourth in the hollow created at the backside of a partner's bent knee. So I spent last night with that marine biologist. She was totally into the frolicking eel. frolicking eel by Eelmeister April 24, 2011 0 0 Get merch Get the frolicking eel mug. Buy Now — $32.95 See more merch