Excess mayonnaise that has been wiped from a butter knife to the edge of the mayonnaise jar.
"I can't reach the bottom of this jar, but the second-hand mayonnaise at the top has bread crumbs in it."
by Lacan May 20, 2009
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After you eat a jar of mayonnaise with your bare hands and your hands are sticky and it looks and feels like you came on your hands.
Brad: Yo I shook Chad's hand and it felt like there was cum on it
Jacob: No I think he just has mayonnaise hands.
by Lil Mayonnaise June 22, 2018
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