Definitions by call of duty: black cocks

Threenis 

Three conjoined phalluses located in the pelvic cavity, directly above the the testes. Contrary to popular belief, there is no "factor tree", I.E. hydra rules do not apply.

Yo man, my bro johnny has the craziest threenis setup in his jeans. The ladies have to watch out for him.

Threenis by call of duty: black cocks July 21, 2011