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9.
When a rapper attacks or abuses someone in one of his song lyrics.
The Game's many shout outs include attacking 50 Cent and G Unit with his song, "300 Bars and Runnin'". (50 Cent retaliated with his song, "Not Rich, Still Lyin".)
by Brandon Vogt June 01, 2006
 
1.
shout-out (n.) Slang. A public expression of thanks or gratitude
"I want to give a shout-out to Louisiana's Governor Kathleen Babineaux Blanco for bringing to light the problem of Louisiana's coastal erosion...."
by Sharon June 16, 2006
 
2.
To acknowledge someone. To make ones presence known.
I gave my girls a shout out at the party.
by GB April 02, 2003
 
3.
A positive public acknowledgement of a friend.
I'm giving a shoutout to all my friends up in Canada!
by Danny B March 16, 2005
 
4.
To acknowledge with respect.
God finally gave a shout out back to all his niggaz
by Sir Spunk January 20, 2003
 
5.
1. A message to friends, family, etc. lodged on a radio station, web site, or other popular medium.
2. An inane activity chowing up airwaves, electricity, and bandwidth.

Hint: UrbanDictionary.com is for definitions, NOT SHOUT OUTS.
All those shoutouts on the radio sound the same.
by Shen November 21, 2004
 
6.
A witty or funny message to someone or something published weekly in the Badger Herald at UW-Madison on Wednesdays.
SO to the obviously 8 months-pregnant woman lifting weights at the nat. looks like somebody had an oops.

SO to getting the hot TA in my botany class. Scorreee.

SO to shoutouts. You make friday afternoons at work tolerable.
by bdgr January 28, 2009
 
7.
A kind mention of a homey.
"I'd like to give a shout-out to my boy Lawson for throwing me this super fly party."
by Hambone June 18, 2003