This is the art of achieving orgasm in a public swimming pool. In order to do this a girl must rub their vaginal area on the swimming pool jets achieving multiple orgasms and not been noticed by friends or family members.
I heard she did a dirtytracey in the pool then squirted on a life guards face.
The act of being in vaginal doggy style intercourse and then preparing the anus with you finger for a switch off. Only to get feces on you finger. Instead of warning the partner you proceed to wipe the fecal matter upon there back. Hence leaving a Dirty Trace upon that individual.
“The other day when I was having sex with Mary I slipped it in and got poop on my finger so I left a Dirty Trace on her back”
DirtyTracy's are all over the Soutb. They tend to chill and pounce when provoked. Probably the best kisser on the planet and can woo you with the wink of an eye.