Birthday parties are supposed to be a time for celebration. Usually, a loved one carefully plans out the event to ensure maximum happiness, but sometimes, some unexpected problems pop up. In the movies, that means some sort of bizarre or disastrous shenanigans take place, leading to either hilarity or heartbreak depending on the movie. But whether the outcome leaves you in tears or stitches, the spectacle of a birthday party makes for great cinema, and the seven movie birthday parties on this list are no exception.
“Problem Child.” Oh, Junior. What won’t you do? A begrudging invitation from a snotty little girl leads Junior, the titular child, to teach the stuck-up brat a lesson. This includes ruining her birthday party at every turn by filling the piñata with decidedly undelicious items and rigging the birthday cake to explode. Simple stuff, but it was definitely effective, and the little girl spent the day crying over her ruined party.