Cheap Thrills (2013)

If you like comedies of the darker variety, I can't recommend this film enough. Any working class person ca identify with Craig, a man trying to support his family, but constantly hitting road blocks that prevent it. Any low-life can appreciate Vince, the slacker who gets by doing whatever he can without ever making much of himself. All rich people will enjoy the couple, Colin and Violet, because they're so rich they can make people do anything for money.
That's the basic plot. Friends from high school, Craig and Vince reunite in a bar when the former is down on his luck. A rich couple keeps giving them money for accepting dares, until they eventually make their way back to Colin and Violets where the games get more intense, more competitive, and downright nasty. Obviously, the ending is absolute gold and I cannot spoil it for you, but this film moves so fast you won't feel your time is wasted so go see it now.