Definitions by DrySimmo

Courtesy Clap 

The act of awarding someone with a single clap to recognize that they have just said a bad joke.

BadJokeTeller: "Hey guys, (-- bad joke here --)."

Audience: (silence and awkward looks)

Bystander: "Courtesy Clap" (clap)

Courtesy Clap by DrySimmo September 1, 2009