The act of applying a Wendy's Frosty upwards into the recipient's taint while administering a handjob in the parking lot.
"Randy picked up some chick at Putt-Putt, treated her to the late night Wendy's drive thru, and was rewarded with a Frosty Underdog. What a pimp."
by World of Girth October 1, 2014
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