Martcart 

A perv

Boy why u acting like martcart

Martcart by Zooz June 4, 2018

MartWart

A meme on the internet. It is a pun on "WalMart"

MartWart
Tennis ball. yeet

MartWart by Dropped My Idiot July 11, 2018

MartMart 

A MartMart is a kid who is rejected by society for his lack of penis size and brain. Has no friends and is just a all around loser at life and also looks towards video games to ease his pain. His name is also usually marty

Dude did you see that kid with know friends?" "Yeah, man That kids a MartMart

MartMart by Ed the bird November 18, 2010

MartMart 

In the game Tales of Symphonia 2, that creepy 10 year old Alice calls our queen Marta "MartMart". Very sexually curious and has a particular attraction for prepubescent boys who have demons inside them. Her best friend is a sassy black cat. Hates blonde girls.

Marta: Alice only comes up with those little nicknames for people she likes.
Emil: So the fact that Alice calls you MartMart must mean she likes you a lot.
Marta: No, it's the opposite for girls. That nickname means I'm on her bad list.

MartMart by qwwerttyyu December 21, 2016