The bloodystain left on a road from plowing into a deer at 60 mph. Usually accompanied with a puddle of antifreeze and may or may not include skid marks
Joe: Did you see that deer smear on hwy 51?
Jim: Yeah, guy must have been going about 70 when he hit that.
The sputtering, semi-solid shits you take the next day after a long night of drinking beer.
Sara (to herself sitting on the toilet): arrrrrrrgggg this sucks, I drank way to many beers!
(Leaves bathroom)
Lenny to Sara: You ok? what the hell was going on in there?
Sara: Oh just the worst case of beersmear EVER
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.