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1.
1. (noun) - a giant booty

2. (onomatopoeia) - the sound that such a booty makes
1. That girl has one hell of an african booty; a real live glub glub.

2. When that track girl was walking and wearing those spandex, her booty was goin' glub glub.
by D-Beazle January 19, 2010
 
2.
A descriptive word for the unique sound of certain types of heavy bass found in dubstep music; seperate and distinct from the common "whomp" sound also characteristic of dubstep bass lines. See "Got 2 Know" by Flux Pavillion for an example.
Damn! You hear that heavy glub glub Datsik is throwin' down? That shit is ill!
by The Undisputed Original P-DuBS October 31, 2010
 
3.
An informal noun referring to a person of African descent. Based upon the sound Emmett Till made when he was tied to a cotton gin and thrown in a lake.
Look! A large crowd of glub-glubs!

I don't want to go to the club because of all of the glub-glubs.
by eggers345 February 17, 2010