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10.
The inhabitants of County Mayo, Ireland.
The Mayonnaise are backward even by Irish standards.
by Rory the sheep October 01, 2009
 
1.
Something that is not, in fact, an instrument.
Is mayonnaise an instrument?

No, Patrick, mayonnaise is not an instrument.
by Hosta Mahogie November 14, 2011
 
2.
It has many humurous meanings.
-- Semen
-- Black Mans Kryptonite
-- Stuff that goes on your ham sandwich
-- What white boys think is cool.
-- Yo man, i covered that hoe in mayonnaise.
-- Yo foo', i cant eat that whack mayonnaise shit.
-- Check out the white liquid on that there ham suckaz.
-- Hey man, check out my hardcore mayonnaise.
by Mayonnaise Tastes Like Purple November 29, 2004
 
3.
1) An egg-based stable liquid-mixture commonly spread on sandwiches and used as salad dressing or a binding agent in cooking.

2) Semen.

3) Boring, whiter than white. Used by Caucasians to refer to other Caucasians who shun their ethnic heritage in favor of a more yuppie lifestyle. Originally used by Italian Americans from the Mid-Atlantic states, it has gained more use due to its reference in the popular HBO show, The Sopranos.
1) "Can I have mayonnaise on my sandwich instead of mustard?"

2) "That asshole jacked off while I was out last night and got his nasty mayonnaise all over my favorite sheets."

3) "Ever since Angelo started dating that girl, he's become so mayonnaise. All he talks about now is joining a country club and buying a house in the suburbs. What gives?"
by Mint Z November 02, 2008
 
4.
The extra skin that folds over between the bottom of a tight t-shirt and the top of a pair of low-rise jeans on a fat girl.
Dude, check out the mayonnaise on that bitch.


by Aquagimp February 17, 2009
 
5.
A word indicating the skeet, also known as semen, that is ejaculated from a man's sexual apparatus; when used in this context it always refers to a woman being either covered in or filled with the afformentioned term.
Dude, I was having sex with this one chick while making myself a sandwhich, first I put on the mayonnaise, then i pu ont the mayonnaise!!!
by Malcolm OSX April 23, 2006
 
6.
Cocaine in powder form.
"Al and Dave the life of the party were known for having great mayonnaise. To approach them using any other term for the substance would mean to be denied".
by Kugaf April 02, 2012
 
7.
A common substituent for sexual lubricant, most often used by the elderly.
Eloise get the Mayonnaise were all out of k-y.
by akaidiot13 August 23, 2011