free boob

Verb

freeboob (third-person singular simple present freeboobs, present participle freeboobing, simple past and past participle freeboobed)

1. (intransitive, rare, slang) To not wear a bra beneath one's outher clothing.
   • But back to the birth of that nutty myth. For many years, it was assumed that the titillating image of incinerated unmentionables—and the scandal of free-boobing gals running wild in the streets—was invented by a scornful male reporter […]2008, Andi Zeisler, Feminism and Pop Culture: Seal Studies