blowbang noun 1verb 1forms 3 noun1 •(slang, vulgar) A sex act involving one individual performing oral sex on more than one man; an orgy consisting primarily of acts of fellatio.That afternoon, I had arranged to shoot a five-man blowbang... quaint. — 2011 verb1 •(slang, vulgar) To participate in a blowbang. formsblowbanged · blowbanging · blowbangs