Batman

Times were so naive and innocent back then. From Defamer:

Short Ends: After Bat Shark Repellant, The Second Best Bat Utility Belt Item Ever

'Back during the early days of production on Batman & Robin, George Clooney's agents rejected a version of the hero's costume championed by director Joel Schumacher featuring a pump-action crotch-trigger and plastic butt-plug inspired by this vintage watergun. Eventually, however, Clooney's team compromised and the project's costume department was hard at work on a series of interchangeable rubber nipples.'