The act of thrusting the air (usually when you have just got out of the shower and have a towel around your waist or are free balling in basketball shorts) so your balls and dick slap back and forth against your ass and stomach creating a clapping noise. It's a good move to pull when you want to break the ice with someone you've never met before. WARNING! When Arabian Clapping intensely, going more than 5 seconds can cause serious trauma to the testicles.
Friend: Dude, are you ready yet?
You: Yeah, hold on I just got outta the shower, check this Arabian Clap real quick tho, "CLAP CLAP CLAP"
Friend: Ahh shit man that was nuts (no pun intended)
Friend: Hey everyone, I want you to meet my friend Becky
You: Hey Becky, listen to this (puts the controller down) , "CLAP CLAP CLAP"
Becky: Whoah, awkward... (secretly wants to bone you now)