the awkward moment

Okay, this made me laugh a fair bit, you're talking to your friends or family, and they say the most outragious, funniest things, then someone else comes along, and says something, while trying to be funny, and it's not even funny, and you laugh because it's not funny, but yet the person who tries to be funny tries, so they laugh because they think you think it's funny so they join along in the laugh, and you think hahahaha oh gosh, shouyld we tell him/her?