Filthy Carl
The act of defecating in ones sock and proceeding to slap another individual across the face with the afformentioned. In most occurences, there is a giver and a reciever. (Usually a tremendous insult)
I gave Brittany a dirty carl when she turned around.
Filthy Carl
A Filthy Carl is when you stick a cold stick down a girls butthole.
Damn bro, I filthy carl'd that chick last night!