weenie-shrinker Share definition Flag A day that is so cold that it causes shrinkage, as in the Seinfeld episode. Jay: Man, it's so cold out here my ears are frosting! Chuck: Yeah, it's a real weenie-shrinker. weenie-shrinker by Chuck_2122 January 20, 2007 0 0 Get merch Get the weenie-shrinker mug. Buy Now — $32.95 See more merch