its when a prostitute or promiscuous female perform oral sex to a gentleman in the motion of brushing her teeth useing his sperm as toothpaste flossing with pubic hair is (optional)
Its when a slut sucks your cock like she was brushing her teeth using ones cum as tooth paste
FUCK Dude ! My girlfriend gave me one hell of a slut brush last night !
She gives one hell of a slut brush