The sexual act of engaging in intercourse during the female's menstrual cycle, then proceeding to force her to give the male a blow job without clean up. This must only be performed during the most heavy days of her menstrual cycle, thus adding more lubrication and flavor. A Dirty Kenny may only be performed in a bathroom (preferably the handicapped stall). There also has to be a photographer to take a picture of the Dirty Kenny, or else it doesn't count.
Dude, I got my girlfriend to give me The Dirty Kenny during 3rd period in the bathroom!
Not cool man, not cool.
Nah, it's okay. It just looks like she's wearing lipstick now!