Top definition
Portsmouth based adjective for anything bad or suspicious.
That fellow in the long black coat and sunglasses looks mack as fuck.

These goods I have purchased are mack as fuck.

I ate one too many cakes and now I am feeling mack as fuck.

This situation is mack as fuck, mush.
by Dear Mr.Dead December 18, 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