A line of fecal matter in your underwear that varies in thickness from thin to meaty. Usually a result of poor asswiping skills.
by Ingl October 15, 2010
Skin mark fart is a Fortnite kid that has no life and does Fortnite challenges all day and is really tall like a giraffe
by purpleguyvrr March 22, 2022
Skin mark fart is a Fortnite kid that is ass at Fortnite and is tall like a giraffe and he takes heroin
Skin mark fart needs to touch grass
by purpleguyvrr March 24, 2022