Fat-slap 

The act of offering one's seat on public transport (most commonly the Subway) to a lady who appears to be pregnant but who is, as it turns out, just a bit fat.

John: Excuse me ma'am I see you are with child may I offer you my seat?

Natasha: What, bitch? Are you fat-slapping me!? I'm gonna beat yo' sorry ass!

John: Fuck off.

Fat-slap by J-Sox August 2, 2009

fat slap 

The sound caused by fat slapping against eachother when two fat people have sexual intercourse.

There was some serious fat slapping going on in the bunk next to me at fat camp.

fat slap by Ashleigh Bennett February 16, 2006

Fat Slap 

Vb. fat slapped, fat slap.ping
1. To strike the forehead of another with the flat plane made by the fingers as they are pressed outright and together making a loud, high pitched noise.

N. Fat Slap
1. The act of fat slapping
2. The sound made by such a blow

The boy fat slapped his friend, embarassing him greatly in front of the group.

Fat Slap by unbornchickenvoices January 9, 2006

National slap a fat person day 

on december 5th you can slap any fat person you want no matter what they say

Yo it’s december 5th let’s go slap Jaden it’s national slap a fat person day !

National slap a fat person day by Johnbooth December 2, 2021

Slap that big fat ass week 

May 8th-May 14th is national slap that big fat ass week

James: “Bro did you hear todays May 8th it’s national slap that big fat ass week.”
Rob: “Oh fuck.”
James: “Bring that ASS HERE BOY!”
Rob: “OH HELL NAH”
James: *SLAPS THAT ASS*

Slap that big fat ass week by bigblackballzz111 May 7, 2023

fat slappy 

The art of getting an amazing kill in a FPS, for example a head shot, quick scope, or something completely absurd and shouldn't of been able to happen. Or, in other words, yeeting that bitch so hard they get completely erased from existence.

"Hey Ben, did you see that fat slappy i hit with Ela's shotgun?"
"No, but did you see the fat slappy I hit with Doc?"

fat slappy by daedra231 December 3, 2018

Fat Slapper 

Skinny man who likes to get intimate with primarily heavy set women well above his weight.

Wow, Johnny was with Casey last year now he's with Brittany, what a fat Slapper.

Fat Slapper by OGTed November 8, 2015