A phrase used by men to describe something or someone so ugly it "shrinks their boner" or immediately halts an erection.
by livingalie246 January 22, 2009
Get the Boner-Shrinker mug.We were at the strip club and Norman was being such a boner shrinker and wouldn't stop talking about his problems.
by moabjen August 12, 2015
Get the boner shrinker mug.