Just wondering...since we have not seen any pictorial or video evidence of a Titan doing anything untoward.
I mean, it's not like a Titan ripped off a Bronco's helmet and slapped him or anything.
From looking at these, it's apparent that "dirty" means "doesn't fight like a girl" considering what we see here and Andre Johnson pulling Finnegan's hair last year .
JUMP!

GO TITANS!