1 definition by xm4321
A sexual act involving spinning around destructively while ejaculating. When having sex at a girlfriend's place, one pulls out of her right before climaxing. One then proceeds to outstretch their arms and spin around violently and erratically in circles, smashing into things and knocking them over while simultaneously ejaculating all over.
Kelly - "Whoa, what happened to your room, Jill? Everything is smashed on the floor and covered in come!?"
Jill - "My boyfriend found out I was cheating on him and hit me with an F5. :("
Jill - "My boyfriend found out I was cheating on him and hit me with an F5. :("
by xm4321 October 15, 2008