Meowvin was just a poor boy who was bored with nothing to do during his holidays, so his friend told him to join a gang.
However, when big daddy thundercock alpha male gangster junxiong accepts melvin into the gang, he is now addressed as meowvin.
A technique attributed to a British orthodontist named Mike Mew that involves putting pressure on the roof of your mouth with your tongue to try and change the shape of your face by moving your maxilla up and forwards with the lateral pressure of your tongue. This fits into the broader looksmax approach to self-modification in the name of love and romance.
Stacy "Yh Chad has some nice ass jaw now. He's been mewing for 6 months now"
The act of altering the height of grass growing in a domesticated yard (lawn) via mechanical or other means WHILE WEARING FLY CLOTHES AND MAD BLING YO!
(Looks out window) "What the hell is Steve doing?"
"I think he's cutting the grass."
"Have you seen what he's wearing? He looks like a GANGSTA!"
"Oh then he be MOWIN' DA LAWN, yo."