Top definition
A flipping of the syllables in stupid, invented by first-graders in that blissful year where the word stupid is a horrible swear.
Person 1: "That's so stupid!"
Person 2: "Oh my gosh, what did you just call it?"
Person 1: "Oh, sorry, it's so pidstu, then."
by Borkborkbork August 14, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug