When a woman/man bends their knee putting their heel to their rectum with a penis in the crease behind the knee. The person then moves their leg in a horizontal fashion to create kneeskee effect.
"Oh man she forgot to put lube behind her knee. That kneeskee hurt my wang like a bitch!"
KesekiMoFo n. Originally the name of a guy who participated in the game Infantry. In the game, people used its abbreviated word of KeseMoFo, taken as you bitch. Also seen in communities such as Cosmic Rift