Mega Slapper

When you have your erected penis out and a group of people repeatedly slap it all at once until they either get tired or when it falls off, and by it i mean your peanits.

"Dude, I got a bunch of people to give me a Mega Slapper at the party last night!"

by The Gooning Giant June 10, 2024

soap slapper

A person which puts his penis in a soap bottle and masturbates by shoving it up and down.

I can imagine Jeffery being a soap slapper, what a freak!

by Heisenberg308 August 3, 2024

Knee Slapper

A saying a person does when another person says an unfunny joke but you're being sarcastic about it, indicating it was the funniest joke you have ever heard in your life. (being sarcastic if you didn't get that)

"Hey Billy, why did the chicken cross the road?... TO GET TO THE OTHER SIDE!" *laughs hysterically*

"What a knee slapper, Timmy!" *slaps knee*

by lovelyleftorgan777 May 4, 2022

Slapper

Someone who is beyond fucking retarded.

You're such a huge fucking slapper it's unreal.

by bruhmoment1254 May 5, 2020

calf slapper

A very long penis that dangles below the knees and slaps the calves when running. May also be used in the plural form to describe low-hanging testicles. See calf slappers

As I ran beside Brad during our workout today, I heard a pitter-patter below his knees. He must have a real calf slapper in those sweatpants!

by CalfSlapper October 26, 2015

Slapper

When something is really good or funny.

Yo watching you fall off your bike was an absolute slapper.
Blaise coined the word slapper.

by AllHaleBlaise April 16, 2021

Slappers

People who like to SLAP the BASS, the bASS and SLAP like right now! No one can SLAP better than them.

SLAP like right now because that's what real slappers do!

by ilikebass August 18, 2019