The initials for Iritable Male Syndrom, or in Redneck-Boise, more commonly known as Idahomotorsports.com

A gay-community car forum with mostly people from Boise and the Treasure Valley. Its a place to hang out and meet people, much like e-harmony, but for people who have come out of the closet, or have yet to do so. Don't expect to find many girls there, unless you're into lumberjack looking dikes, which can easily be confused for the high-posting members there.
"Work was boring so I was circle jerking to the IMS shoutbox all day today."

"You going to the IMS meet this Friday?"
"I dunno man, last time I went some ginger kid kept taking photos of my dick instead of my car, then wherever I went, several guys kept trying to grab my junk!"

"Look at the STI I just bought d00d! I decided to get a new mode of transportation to The Balcony!"
by turbo2cam July 05, 2009
PMS for guys
Julius has been cranky the last couple of days. He must be IMS'ing.
by the WIZARD of OZ November 24, 2003
IRRATABLE MALE SYNDROME....(PMS 4 guyz without blood or pain....just the crankiness,cursing n all the other SWEARING SHIZ!)
by andrew paik July 09, 2003
irritable male syndrome:
Depression/ anger/ fatigue/ moodiness/ anxiety/ lethargy/ low libido/ confusion/ increased use of sarcasm. The feeling of being overworked at 40 and 55 years.
IMS is fueled by gulping large amounts of Vitamin C!
by hammer---;, hytham April 13, 2007
This is an abbrieviation for Intense Makeout Session..some prefer IMOS, others IMS..whatever floats your boat.
Bob: Sandy and I had the sweetest IMS last night!
Harry: Score, dude!
by Intense-Kisser October 12, 2009
Itchy muffin syndrome

when a woman's vagina or vaginal area itches, otherwise called the muffin
I had such bad IMS last night after shaving.
by lolzgurli333 March 03, 2011
stands for "I am sorry"

usually used in text messaging
Girl: Why you cheat on me?

Boy: "IMS"

Girl: No no its over!!!
by Raya11 November 03, 2009

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