In some places they're super useful, such as the bedroom, or an airplane bathroom. But they've also been known to show up in decidedly inconvenient and unsexy places, with little more than a light brush or a rumbling car setting you on a path to awkward, unwanted engorgement. No one wants a sudden pocket rocket to cause ignorant, wandering eyes to view them as some kind of pervert. Luckily, a little know-how and maneuvering can help you keep your pants party hidden in pretty much any situation. Where to use it : The most inappropriate places for an erection to exist: funerals, bar mitzvahs, kids' birthday parties.