skid marks

used to describe the brown marks in unwashed tightey whiteys belonging to someone who just couldnt hold it. or, alternatively, they had an all day wedgie.

Dude! Check out those skid marks! Dad must've had Mexican for lunch today.

skid marks by zappafreak May 23, 2004

UC San Marcos 

The ultimate UC. This school is so good that absolutely no one can get in.

Dumbass: "Dude, I got into UC San Marcos!"
Sarcastic Asshat: "WOW. You must be on a whole new plane of existence"

UC San Marcos by XxRektURmuMxX April 1, 2018

skid marks

1. burnt rubber marks left on tarmac when peeling out with a fast, powerful car
2. poo stains left on underwear when ass is not properly wiped hershey highway

1. That porsche left skid marks on the road.
2. I was taking a shower and noticed skid marks on my underwear.

skid marks by Jin Kim April 25, 2003

San Marcos 

SM is an awesome city! located in north county san diego...its a pretty small city but is fast growing. layed back people..skaters,surfers,potheads,gangsters,emo kids, you name it, we got it. although it seems like SM is split apart now that there are 2 different high schools. theres the mission side and the smhs side. n-78 and s-78...you wouldnt understand unless you live here.

SM is a great place..altho there are plenty of kids that hate it. FUCK THEM! we might have the best fuckin weather in the world! and...a great place for buying furniture!haha

San Marcos by reppin760sm April 25, 2005

Shart marks 

1. Flecks of poop shrapnel left behind after pooping in a toilet.

2. Marks left behind in your underwear from sharting.

After your daily deucing, check under the seat to make sure you didn't leave any shart marks, especially if you're pooping at a friend's house.

Shart marks by PooEtiquitteEnthusiast August 25, 2011

sock marks 

The indentations left on the calves or ankles as a result of wearing tight socks;

I'm heading to the gym after work today and I only brought shorts. Damn, I guess I won't be able to conceal my sock marks.

sock marks by Crotch Warrior April 1, 2016

san marcos 

A small college town located half way between Austin and San Antonio in central Texas. The main school there is Texas State, formerly known as South West Texas. Known to most people as just being as a ridiculous party school, TX State also has decent academics. San Marcos is 35-40 min from both Austin and San Antonio.

The good thing about San Marcos, other than the abundance of horny college chicks, is it's location near several rivers/lakes. During the long summers, you will find many people floating the Comal or Guadalupe rivers in San Marcos and New Braunfels. Lots of cold beer consumption is a must.

san marcos by Emperor Hirohito January 22, 2007