Top definition
When a person is so tired, they become hyper.
Shit, did you see Johnny the other night? He was so hypertired, he did a backflip over a truck, then fell asleep on the pavement!
by donkeypunch99 May 01, 2009
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

Alphabetical list