H-Clap
A guy gets his junk messed with from the top while his friend messes with her from the bottom. They both high five like they just pulled off the best prank ever.
The guy got his willy squished from above while his buddy gave her a good tongue-lashing from below. They fist-bumped like they just invented the wheel.
She was getting double-tapped from front and back while the guys slapped hands like they were best friends.
He had his pecker pounded from above while his pal gave her a good face-full from below. They clapped like they won the lottery.