**child fails to respond**
mother: ooohhh, you mardybum!
now then, mardybum! - arctic monkeys
2) A fansite dedicated to the above band - www.mardy-bum.com
3) A collection of mardy and bum, someone who moans when they don't get their own way and yet don't do anything for themselves.
Can be subsituted by any string of lyrics from the Arctic Monkeys song of the same name.
"Mardy bum, mate"