mayonnaise monkey 

Human mammals with opposable thumbs with white skin tone. Yep, white people. Especially those that believe they are superior due to the color of their skin.

Look at those alt-right, mayonnaise monkeys, trying to pretend they're superior!

mayonnaise monkey by Slippery Weasel January 23, 2017

Mayonnaisephobia. 

The fear of mayonnaise.

Me: Im seriously afraid of mayonnaise, i think its going to kill me, not even playing...I have mayonnaisephobia.

Other person: *grabs mayonnaise.*

Mayonnaisephobia. by Kattheripper. April 26, 2011

Baby Mayonnaise 

Sperm or the act of cumming.

You just ate a whole bowl of baby mayonnaise.

Baby Mayonnaise by McGoogles October 23, 2008

mayonnaise jar 

a gal who's been around eventually developing a cavernous and sperm lubed vagina from the multitudes of men she's slept with. A loose trick.

Did you hear her Nuva Ring slid right out when she was balling that nameless guy off the street? What a mayonnaise jar!

mayonnaise jar by Roundhouse Ninja Kick March 19, 2010

Mayonnaise Caps 

Used to describe very large areolas on a woman's breast.

Dude, check out the mayonnaise caps on that stripper.

Mayonnaise Caps by dkblz August 10, 2007

Mayonnaise American 

Those who partake in the mayonnaise arts aka white people.

Also shortened to mayo american

These mayonnaise Americans need to understand salt isn't a seasoning. ~ cypressbill~ (a mayo-american)

Mayonnaise American by CypressBill June 11, 2023

go full mayonnaise 

To perform sexual intercourse with an extraordinary loose (and moist) vagina, mimicking the auditory experience of penetrating a jar of mayonnaise.

Today I'll go full mayonnaise. My wife gave birth the other day.

go full mayonnaise by pete the partyhog February 8, 2019