Top definition
A phrase used to caution someone before undertaking any difficult task.
I will help you carry that couch.

ok thanks, but dont blow a foofer valve.

can apply to most situations.
by hmorrison February 19, 2011
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
2
A highly technical description of an electrical part that is unknown
Techo 1: Hey, why isn't that working?
Techo 2: Not sure, I think it's blown a Foofer Valve
by mikeybear69 July 02, 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