Cock Flossing 

The action of constantly gloating about recent/past accomplishments even though everybody knows. Not always, but most of the time, the thing being gloated about is insignificant.

Also can be used as "flossing your cock."

Cock flossing can be confused with normal flossin ,but the difference is that Cock flossing is usually done with something that no one will remember/care about in an hour and also does not refer to physical objects.

Seth: I got a 5+ killstreak in Minecraft a few minutes ago.
Brady: Cool.
*Minutes later*
Seth: Dude, I did so good in Minecraft. I got a 5+ killstreak.
Brady: Can you quit cock flossing already? It's getting annoying.

Cock Flossing by mylifeisterrible November 29, 2018

cock flossing 

The act of double penetration of the vagina and anus wherein both penises move out of sync (one goes in, one goes out) while never completely withdrawing from their respective fuck holes, creating the illusion that they are attatched in the middle and looking like a peice if thick dental floss going back and forth inside the recipient's abdomen.

Brandy: So I took these two guys home last night, they were cock flossing me all night!

cock flossing by Thelonius Von Funkmaster Chimpsale April 26, 2008