gravel rash 

Gravel rash is a term used in the gay community, to describe their first anal sex experience, as often the sphincter is very tight, and may produce a rash on the tip and shaft of the erect penis.

Trent: "Man, my first anal sex with a guy gave me the biggest gravel rash on my fucken knob aye! Luckily with time, the wounds have healed and so has my gay sex life!"

gravel rash by omg i am wtf uber November 8, 2006

slag-rash 

slag-rash means love bite.

james - did you see kates slag-rash
emily - yea its a big 1!

slag-rash by ....ninja.... May 29, 2007

Status Rash 

A person who once seeing a facebook status is all over it like a rash with comments and thumbs up.

OMG, she's commented on my boyfriends status for like the 17th time today, shes such a status rash!

Status Rash by lpod85 September 11, 2009

Zip-Rash 

ZipRash/ZipperRash/Zeerash/Zrash

Is a general term given to a non life threating symptom that usually occurs as a result of spontaneous intercourse, whereby the male has engaged in intercourse through an open jeans or trouser zipper, causing localised trauma to the penis shaft.

Can also be caused by running Commando for extended periods in tighter fitting attire.

A more innocent form of Zip-rash may sometimes occur directly under a persons chin - as a result of wearing an incorrectly zippered up Cardigan, Jacket or similar.

"who could I turn to.....? my doctor ?? c'mon I only had zip-rash...!!!"

Q:"Good lord... you had blood in your undies........?."
A:"All OK...it's just zip-rash"

"We did it on the dancefloor again... ummm man - i got zip-rash, so i gotta sit down now"

"Guess I didn't wear undies for a week and now i darn got zip-rash again"

Redwood through an open zip may inflict a more painfull and severe zip-rash, thus requiring medical attention.

Zip-Rash by Grandmaster Bass November 12, 2011

Jap Rash 

The multiple cuts, grazes and sore skin you obtain from working on Japanese cars. Because of the tight and compact nature of Japanese cars, its hard to not get cut up when working on them.

I got some nasty Jap Rash last night from working on my Silvia.

Jap Rash by 4nthrax September 26, 2015

Facebook Rash 

(noun)

Someone who follows you around on Facebook, and comments of everything you do.

Person: Oh my god, that stalker keeps liking all my new photos! I should never have added him. He's such a Facebook Rash.

Term first introduced by The Oatmeal.

Facebook Rash by lrx_stra March 18, 2016

Metro rash 

Stains on clothing obtained by using public transportation or walking in public.

Bob: Jane, did you realize you had a huge stain on your sleeve?

Jane: No! This jacket is brand new. Ahh! It must be from me leaning on the Metro this morning.

Bob: Looks like a bad case of metro rash.

Metro rash by Abchico2091 March 28, 2016