The act of exactly four people having sexual relations with each other as a group. Traditionally, at least two of the four parties involved were brothers.
My brother reminded me to always wipe when switching at a Quad Tra.
When two siblings find themselves in a sexual situation with two other people in some kind of sex party.
Its cool bro. Its just a menage a trois, or better yet a quad tra!
An adjective describing ones inability to decipher the information originally given to them, resulting in them asking a question clearly answered in the information they were given in the original response.
(Send your bro a link to a video on the most popular tube site on earth)
Bro says, "That was dope! Who made that video?"
You reply, "Its clearly stated on the page who made the video bro! I'll forgive your klaptunce on this one."