When someone thinks that you fancy them, yet you ignore it and pretend you like them, yet slag them off behind their back with something extreme yet likley, damaging their street cred and chances of having sex with anyone in the future.
"I'm gunna slapper poach that Ho, I cant believe she caught herpes after sucking off that tramp for a taste of his special brew!'
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!"
The Slapper says "Keep his wife's name out cho' fucking mouth!"
A double knee slapper is when you hear something that is so funny that it brings out your embarrassing loud obnoxious laugh. So instead you fake laugh out loud and jump in the air, slapping both your knees going “Boop boop” then land on your feet, yelling “Thats a Double Knee Slapper!”
Dude, Dom’s Double Knee Slapper yesterday reacting to her joke, nearly made me piss myself.
One who wakes up with a saw arm/arms after a big night playing the pokie machines.
Bro, woke up with the worst slappers arm this morning after double fisting Chilli and Big Red Last night. It was a struggle just to brush my teeth.
A fart that claps them cheeks hard as heck.
Booti slapper sometimes be rippin holes in clothes.
One who cannot drive, and does not use public transport
Bro, look at all those foot slappers out in the rain