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1.
A euphamism for a woman's breasts. Originally used in place of the phrase "huge guns" since in WWII, Germany fired 88mm cannons, which were considered to be huge guns.
Whoa, check out the 88's on that bitch!
by Foxtrot-Echo-Seven-Zulu-Niner February 03, 2005
 
2.
Piano, more aptly the keys on the keyboard. From the fact that most modern pianos have 88 keys. Also related to the German WWII cannon called an 88. The Allied troops would call them pianos (because both are 88's).
Wow, he's really banging the 88's tonight!
The 88's really rocking tongiht.
by TheTexasAV8R October 20, 2010
 
3.
88's is the term for a group of two or more fat woman who believe they are either a) better than everyone or b) Think they run their social group.

88's tend to waddle around in pairs whilst at the same time spreading rumours and trying to disrupt other pairs.
John: Hey Bob look at that those 88's!!
Bob: Yeah wow we will have to grease the doors to get them through.
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88(1): Hey have you heard what jill has done? i think we shold spread rumours about her to make us look better
88(2): Yeah good idea!

fat sociopath large
by slimsniper December 08, 2009
 
4.
A clan tag used during Call of Duty 4, 5, or 6. Normally used by Lax Bro's, 88 represents the 8th letters of the alphabet which is H, double 88 represents Heil Hitler
88'sLaxorFL: yooo, im soo good at COD i might as well be 10th prestige....
....NSUXxX: Dude you suck, all you do is Noob Toob and Camp, besides, lax bros can't play cod
by COD expert December 03, 2009
 
5.
A hazing ritual designed by high school cross-country teams. It involves a member of the team swiftly ingesting 88 ounces of slurpee, then spinning around in 88 circles, or until they puke. If the person in question has not puked by then, they have to run around the track until they puke.
1: "Let's join the cross-country team!"

2: "I'm not sure, I heard they make you do 88's if you're a freshman."
by RagnarRagnar May 12, 2011