Top definition
1. What seems to be a great guy, but is actually the complete opposite.

2. A poor imitation of a soulmate/awesome guy.

Derived from the phrase:

"My knight in shining armour turned out to be a loser in aluminium foil"
Marquesa: I don't know why she's still dating him.

Calpurnia: I know, he's just a loser in aluminium foil.
by TeapotOfKarma April 14, 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