Akin to a cold rectal thermometer, the chilly thermometer is defined as the act of a chilled penis entering a partner's anus during coitus. Also, a mis-heard trivia answer referring to John Travolta's character in Be Cool and Get Shorty.
I was so drunk last night that I stuck my dick in the freezer and gave my girlfriend a chilly thermometer!
by DeOmnibusDisputandum March 25, 2011