A rude comeback or action which surprises the other person or persons which is used by others not the person to say the comeback.
She's more stupid than a donkey.
Wow, you're really blan dude.
I hate her, she's really ugly. She'll never get a boyfriend.
Why are you so blan?
something that is good
A Plan created out of pure boredom; an event made between two people because they dont have anything else to do.
Dave: Yo Randall I'm Bored
Randall: Ya me 2
Dave: Wanna go get some food or something
Randall: Well we have nothing else to do...
Dave: Well I guess we have a Blan