Batgirlkyoki's definitions
When one fist is shoved wrist deep in the Vagina, and the other is likewise inserted into the anus. One then proceeds to lift the recipient into the air with both fists, the recipient thus becomes the human flail.
Bro1: Bro, my girlfriend and I tried The Human Flail last night!
Bro2: Dude, no way! How was it?
Bro1: It was great! Arms, legs, and titties were everywhere!
Bro2: Dude, no way! How was it?
Bro1: It was great! Arms, legs, and titties were everywhere!
by Batgirlkyoki September 5, 2016
Get the The Human Flailmug. 