FJ Cross

A martial arts technique in which one neutralizes their opponent, and then, having secured a dominant position and ensured that the opponent is thoroughly subdued, proceeds to massage the opponents genitals using their feet. A popular move amongst practitioners of Krav Maga as it is potentially lethal when used in a bare foot situation.

"I tried throwing a few punches, but she came at me with an FJ cross!"
"troll'd m8."