Steal your police officer father's gun and make him beg for his life
Don't do this one! If you, like the character Brad (Hayden Szeto), are a young gay man who just came out to your gruff, distant cop dad, maybe stay away from him when you're playing this game. Because the game is going to dare you to steal his gun and make him beg for his life. Then you'll get shot by another police officer and the movie will have fewer characters to deal with as the plot scoots along to its finale in Mexico.
Tell your best friend the darkest secret you've been hiding for years
This is really more of a dare, right? That's always one of the problems with truth or dare as a game: You can always just dare someone to tell you the truth about whatever topic you were hoping to hear the truth about. Anyway, the demon turns this against Olivia, who spends most of the movie saying she doesn't want to reveal a disturbing truth in front of Markie, and forces her to spill her guts. (To make a convoluted story slightly less convoluted: Markie's dad killed himself after he attempted to kiss Olivia and she told him his daughter would be better off without him; Olivia has been holding in this secret for years because she didn't want her best friend blaming her for her father's death; when Olivia reveals all this, it doesn't go over great.) The lesson here: Don't keep secrets about your best friend's dad's suicide.
Kill one of the two women you're sleeping with in your friend group
I think you can see a pattern emerging here...
Murder your best friend
Calax, the conflict-craving truth or dare demon, is not going to help you achieve your #friendshipgoals. The tongue-cutting-off that happens at the end of the movie doesn't technically qualify as a dare -- it's more of a way to stop the ritual -- but the part where Olivia is dared to kill Markie definitely is. (I think? The ending of the movie is very dimly lit and, frankly, confusing.)
The actual final moments of Truth or Dare, where Olivia attempts to outsmart the demon Calax by forcing it to reveal a loophole to let her escape the games, are packed with arguments, spells, and rituals. (That's where the improvised tongue surgery comes in.) The important part is that Olivia realizes she can save her friend Markie only by inviting more people to play the game. How exactly does she do that? She goes viral by filming a video where she invites all her YouTube subscribers -- and anyone else who watches her clip -- to play the game, effectively initiating the entire YouTube-loving planet into a massive game of Truth or Dare. We see people all over the globe get that weird grin on their faces. Olivia spares Markie's life by essentially dooming the entire planet. Not cool, Olivia. Even more not cool? This is totally an attempt to set up a sequel where we see people all over the world get challenged to stupid dares. At the very least, they should cast Johnny Knoxville in Truth or Dare 2: Let's get some reals stunts in these movies.
As for the impressionable young minds exposed to this movie, if you want to spice up a dull gathering of friends, maybe try a less sinister icebreaker, like Two Truths and a Lie -- at least until some horror producer turns that one into a cheesy movie, too.