It's when you put mayo on your fingers, shove your fingers up your ass, and then proceed to lick it off.
The mayo john was eating didn't have a lot of flavor, so john decided to do a mayo lick.
by freddy69 May 1, 2015
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when a kid named matthew eats bread-mayo-bread sandwiches
marty mayo lick is eating pure mayo sandwiches!
by whyamiusingurban November 8, 2019
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When a kid named matthew eats mayo only sandwiches. I'm talking nothing but bread, mayo then bread.
marty mayo lick is licking mayo
by whyamiusingurban November 8, 2019
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when a kid named matthew eats bread - mayo - bread sandwiches
marty mayo lick is eating pure mayo sandwiches!
by whyamiusingurban November 8, 2019
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