The invisible coat you where over your tshirt/short sleeve/bare chest when walking home on a freezing night out without feeling the cold.
by justpaul February 23, 2005
"You must have been freezing last night walking home?"
"I didn't feel it. I had my trusty beer jacket on"
"I didn't feel it. I had my trusty beer jacket on"
by !david clarke! May 29, 2007
by Rossa O' Donovan January 22, 2009