The feeling is acquired when you try to tell a joke, which you find very hilarious, but then nobody laughs and you're left to feel like a complete jackass.
Boy 1: -tells a joke- Wasn't that so funny?!
Boy 2: -stares at boy 1- no.
Boy 1: Uhhh.. damn it! I just got the feeling.
John:"I'm feeling off colour today, it's nothing serious but something's not quite right"
John's mum:"Well, you shouldn't go to school then. I'll call the doctor".