Knee-slapper

When you cut your knees off and slap your partner with them

I was having a bad so my husband gave me a knee-slapper

by Unifart April 2, 2021

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

Slapper

Someone who is beyond fucking retarded.

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

by bruhmoment1254 May 5, 2020

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

downward slapper

A woman's booty that is so big that if you were to vertically slap the booty at a 90 degree downward angle, three of your fingers and 75 percent of your palm would connect with ass

Damn Mike, you see that downward slapper over there?! I bet she could make that shit clap for days!

Hey bro, Mike started seeing a new girl, but she don't got a downward slapper. That shit ain't cool.

by xo805 December 11, 2020

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

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