a fatty 

1) A large take in sales on a single business transaction.
2) A disproportionately large margin made relative to the actual cost of the product or service.

"We are two hours into the new month and Anthony has already closed a fatty."

a fatty by Mr. Wundirphal April 18, 2009

A fatty of fun 

(adjective) Describe a ton of fun.

That was so awsome, dude it was a fatty of fun.

A fatty of fun by Sarah and Molly August 4, 2008

a fatty ratty 

A fatty ratty is a kid who is just so annoying and poor he's just a rat

That kid jack Kurtz is such a fatty ratty

a fatty ratty by Quefff January 8, 2019

drop a fatty 

An explanation you give to your buddies when you have a real growler in your guts and you're about to give birth to a huge deuce, dump, toilet trout, pinch a loaf, etc.

1st guy, Hey dude where you going? Its not break time yet.

2nd guy, Sorry man. I gotta drop a fatty.

drop a fatty by XXL Petey May 3, 2014

roll a fatty 

the process of rolling a rather large joint, and then most likely toking it.

Hey, you roll any fattys lately??

roll a fatty by Dick Jones April 14, 2004

smoke a fatty

Verb.

1. To smoke a rolled marijuana cigarette or cigar, which is noticeably larger than usual.

2. To shoot an obese person.

1. Let's go smoke a fatty joint, yo.

2. Get down fool, I'm gonna smoke this fatty!

smoke a fatty by EvilDeadJunkie February 5, 2007

bust a fatty

Masturbate and ejaculate a massive load.

"damn girl, can I bust a fatty on that ass?"

bust a fatty by Wordlord101 December 30, 2016