slag rash 

when being shagged by various amounts of females (or males though not likely) the females not being shagged suck on a random body part of the man leaving a dark mark on the skin.

me: fucking hell mick! , thats the worst case of slag rash ive ever seen!, infact you ARE slag rash!

mick :pft your just jealous, go back to sleeping with one woman

slag rash by luke007 November 19, 2007

caddy rash 

the state of having a severe rash located between the legs, commonly very close to the crotch. It often results in the victim being incapable of walking normally for anywhere between 1-3 days. Named for its prevalence in activities which require excessive walking as well as sweating.

Aw, man, I have some terrible caddy rash right now, I won't be working tomorrow.

caddy rash by XYXTXAXKXNXAXS June 25, 2008

Dog Rash 

From the language coined at Staffordshire University; A word to describe something negative, replaces usual swear words with something more acceptable in public while remaining somewhat strange yet usable.

Person 1: Man, I've got an exam tomorrow for 3 hours

Person 2: Dude that's total dog rash

Dog Rash by saucehair March 28, 2011

red rash

Main STD at Texas Tech, home of the Red Rashers.

Techsans are fearless champions when it comes to getting itchy crotch spots (Red Rash).

red rash by junyah March 3, 2014

Trump-Rash 

Someone of poor intelligence that is quick to judge and use trump cards in conversation to win a debate E.g racist card, sexist card, ageism card... Including any made up ist's or ism's by the Leftwing.

Mike: I didn't employ Hillary from the agency because of her work history but she wouldn't accept that and accused me of being sexist.

Old 45: She's a Trump-Rash!

Trump-Rash by PC_is_out_of_hand November 26, 2016

Black Flat Rash 

A disease that causes you get black spots most commonly on one forearm, but sometimes on both over night and most certainly causes death within 2 days. Not enough is known to establish the root of this rare disease.

Black Flat Rash

Black Flat Rash by drsteven July 10, 2009

corn rash 

this is what happens when you get your cornrows braided to tight in the back and back of your neck will turn red

aye man i got my rows to tight and it gave me corn rash

corn rash by -BriNk- February 14, 2009