Yesterday, Diet Coke turned 30. Pretty impressive for a brand that primarily rots teeth and creates lifelong addicts—er, fans. To celebrate this momentous occasion, W+K Portland and the soft drink brand will be throwing 30-second birthday parties for their enthusiastic drinkers. A party posse armed with disco balls and limbo sticks (depending on the 30-second theme), will actually visit a few lucky people who tweet @DietCokeUS until August 1 (clip from the first shindig above). In addition to the festivities, these fans get a year’s worth of Diet Coke.

Though their soda doesn’t exactly benefit the world, this week the brand’s generosity is definitely spreading happiness.