A line of fecal matter in your underwear that varies in thickness from thin to meaty. Usually a result of poor asswiping skills.

I couldn’t care less (but one must keep up appearances, right?)

an elongated stain in the rear of one's underwear caused by one of the following: 1)rubbing of the underwear on an insufficiently wiped anus after excrementing 2)expelling juicy farts (butt cheese) into the underwear over an extended period.

TV ad that stays onscreen during the entire program.

Skidmarks are brown streaks left on the porcelain bowl of a toilet when someone takes a big firm dump that rubs the porcelain bowl swirling around until it orients itself for exit down the pipes.

1. burned rubber marks left by tires peeling out

2. the thin brown line in your undies, especially tightie-whities, caused by insufficient wiping

(N.) 1. A thin smearing of shit in your underwear or the stain left from the thin smearing of shit in your underwear usually caused by excessive farting, an improperly wiped ass, or a wedgie in a dirty ass. 2. A term used to describe someone acting like an asshole.