markcostin 

A young boy that is 11 to 12 years old and he has never had a girlfriend also he is probably gay .

Look over there it’s markcostin eww

markcostin by Boiboiboi he thicc March 26, 2020

marcosin 

An act of stealing.

Marcosin ko 'tong meme ah.

marcosin by mahalkongpilipinas February 17, 2022

marcosin 

VERB

1. take (another person's property) without permission or legal right and without intending to return it.

"Hey, Blengblong. I'll marcosin Jake's wallet tomorrow evening."

synonyms: marcos, marcosed, minarcos, nagmarcos, magmarcos

marcosin by primohiraya March 7, 2022

Mariposting 

Being extremely smart in a chat for general conversations and making other chat members feel dumb by their flexing extreme intelligence

Person A: Hello, how is everyone doing?
Mariposter: We can use X feature to do this when that happens, this has a limit however

Person A: ... What a Mariposting idiot.

Mariposting by SynoIridium April 14, 2023

Marcosin 

A word to describe that you are about to steal something e.g. meme, Facebook post, quotable quotes, etc. The word originates from the last name of one of the greatest thieves in history: Ferdinand Marcos, Sr.

I love what you wrote! Marcosin ko!

Marcosin by Knight Black May 29, 2022