GOMS stands for 'Get On My Swing', originating from the well known swing-fetish. Most commonly used when seeing a very attractive person, but also used in other circumstances i.e. to express love for an object or more often a food.
Girl: "OMG check out that guy! Totally GOMS!"
Person: "That ice cream was definitely GOMS."
Isnt frequently used, but is a shortcut for "get off me"
*Chat*
Guy 1: Let´s play soccer
Guy 2: Nah
Guy 1: C´mon
Guy 2: No
Guy 1: lets plaay
Guy 2: GOM YA PIECE OF SHIT
Get Out of My Sight. A phrase used when you are so embarassed by, disappointed in, or fed up with someone you can't even bear to look at them.
~Two Pokemon fans at a Halloween party~
Jen: Hey, cool Ash Ketchum costume!
Ben: I'm not Ash, I'm Red. ...You know, from Pokemon Red and Blue?
Jen: That's what I said. You're Ash.
Ben: You know what? GOMS. Just... get away.
short for Go Mariners, Seattle's Major League Baseball team; typically seen used in a hashtag
I love watching the Mariners, #GOMs