Canadian Air-Conditioning 

Driving with one arm hanging out of your car window, cos your chiller broke.

Guy1: "Why's your right arm brown?"
Guy2: "We lost the air-conditioner in Dave's Pinto, so he drove us from Dallas to Houston in mid-summer with only Canadian air-conditioning and frequent beer stops to keep us frosty. It was hell."

Canadian Air-Conditioning by Uncle Des September 2, 2009