Top definition
A fail that, when examined extremely closely, fails in a very different and surprising way to the one expected.

Reflects the strange behaviour of subatomic particles when observed.
The contract seemed reasonable, but when I examined the small print I realised it was a QUANTUM FAIL.
by LFDD April 05, 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