ratboy 

someone who looks like a rat with squinty pink eyes shortly after smoking some doobage. often named bill or william. generally fond of watermelon sized breasts and the bass guitar.

the bass player in the band was named bill and he had smoked a bunch of weed while jammin. someone turned up the lights and he looked just like a giant fucking rat, except that he stood upright and was holding a bass guitar and a cold bass ale.

ratboy by echoman February 27, 2004

ratboy 

a person who shows rat-like qualities: for example, changing plans last minute and not committing to things early on.

that luke kid is a real ratboy

ratboy by david templeton January 17, 2018

Ratboy 

A term used to refer to someone of a rat-like appearance or behavior. It is also used less commonly as an antisemitic slur originating from online alt-right circles.

“You’re such a greedy ratboy!”

Ratboy by Lucanius March 22, 2022

ratboy 

that one person in your friend group who scabs any and all food that she can get her hands on no matter what it is who who it came from
the one who licks the packet of your food that had icing on it and when offered some of your special cake that your grandma brough you from overseas she will take half of it because you had to say "take as much as you want" to not make you look like a scrouge

friend 1: "does anyone want some of this muffin?"
ratboy: "you dont even have to ask" then takes all of it

ratboy by anonymous November 29, 2022

Ratboy 

A person who is obsessed with god of war. Often named Kershaw

What's ratboy up to tonight?

Ratboy by j1234123 December 29, 2022

Ratboy Genius 

The most beautifully animated and voice acted thing that has ever been on Youtube.

Nark nark, it's me, the Ratboy Genius!

Ratboy Genius by Pissmonger May 7, 2013

Ratboy's Minge 

A cavernous and oddly malodorous place that can be used to conceal stolen cars, aircraft carriers or the Indian subcontinent.

I rented Ratboy's minge out to some vietnamese illegal immigrants, and when i came back they were all dead.

Ratboy's Minge by Mitsquana February 1, 2010