look up any word, like bukkake:
 
3.
A Call of Duty saying. It is used to express anger towards other players while firing more shots than needed.
GET SUM!!!
by MW2 Freak January 04, 2011
 
1.
A saying used to announce anything proudly and with distinction.

Either you have witnessed a public display of affection and wish to creating hilarity for all by yelling this glorified phrase or you wish to add a supreme amount of emphasis to anything and everything.

The phrase must be said with over the top enthusiasm.

A straight back and forth motion of the arm is also encouraged in attempts to hyper enforce the phrase.
(Witnessing two uglies making out) "Woah, gross....GET SUM"(makes emphatic motion with arm until the uglies stop)

Frank: Watch me drink these beers
You: GET SUM

Sandra: I'm going for a job interview
Derek: You'll do fine, as long as you don't forget to GET SUM(makes motion with arm)

Guy one to Guy two: "Yo look Pete is pulling that hot blonde outta here"
Guy one and Guy two yelling from across the bar: "GET SUUUUUM"

Leroy: I've got a date
Bobby: Two words
Leroy: um...GET SOME?
Bobby: You know it. Tropic Thunder style baby(makes glorified arm motion)
by Bobby Vanilla(Get Sum master) January 15, 2011
 
2.
The meaning of the phrase " Get sum " originates from the USMC in Vietnam. It was shouted loudly while fireing fully automatic machine guns to tell a superior officer that more ammo with be needed shortly.

Wrongly confused by most people to be a saying for some1 who is getting sex.
Get sum Mother****ers GET Sum!!!!
by Joseph Michaels - Ex USMC July 09, 2010