Mike and Dave Stangle put the “bro” in brothers. Twenty-something liquor salesmen, they’re the life of the party — but also the death of it — having turned a perfectly lovely Fourth of July fireworks spectacle into a conflagration while endangering innocent bystanders with over-the-top trampoline acrobatics. They just don’t know when to say when. The movie they’re in is similarly afflicted. Starring Adam Devine and Zac Efron as the titular duo, “Mike and Dave Need Wedding Dates” is uproarious and flamboyantly raunchy, utterly stupid yet also occasionally winning.