Last-clap contest
When you're at a performance or assembly and the applaud is just ending, this is the contest when two people both try to get the last clap. Usually lasts about 20 seconds before both people give up.
Cathy: I loved how during the assembly today, there was a last-clap contest between Jeff and Matt.
Clapping Contest
A euphemism for having sex. Especially the sound produced from doggystyle.
Daniel: "Wow the walls in these apartments are really thin. I could hear my neighbors doing doggy last night."
Grace: "I'm pretty sure they were just having a clapping contest."
Grace: "I'm pretty sure they were just having a clapping contest."