In honor of the convenience store’s 90th birthday Tuesday, the company is letting customers get in on the celebration by offering free Slurpees.

We know what you're thinking: All those free Slurpees can’t be a good thing for waistlines, especially with bikini season officially in full effect.

But if you're over-indulging in the cool, sweet treats and visiting multiple 7-Elevens for free beverages all day long, not only will you probably suffer a major toothache, but the 20-plus grams of sugar per Slurpee will most likely leave you as bloated as a pool floaty.

While the ingredients may seem a little sketchy—the Fanta Wild Cherry Slurpee is made with high-fructose corn syrup, water, citric acid (huh?

"7-Eleven Day is a celebration, not only of our birthday but more importantly, of our customers," 7-Eleven Marketing Vice President Laura Gordon said in a statement .