Slappage is the amount by which your balls urgently slap against the arse of the female you're banging.
example 1:
Stud thinking: "I need to give it more slappage, a lot more come on ya bitch get screamin"
example 2: man and wife in bed
Woman : "Oh for gods sake Derek give it some fuckin arsehole slappage will you, come on swing them bollocks like a pair of demolition balls"
I knew she was about to reach orgasm, as was I. She was so turned on, I pulled out, shot my wad in my hand, and gave her a slappycake. She came immediately...
1.) A term used to express anything you like: Invented by Peter Griffin of Family Guy fame.
2.) One half of the popular alias held by famoust explorer Adam Haxell: Because of his immmense fame, Adam had to create an alter-ego in order to avoid detection from the world's media. The name he arrived at... Fransisco Slappywag
1.) "More beer please, you slappwag."
2.) "Excuse me can I get a room? The name? Fransisco Slappywag."