Good news! After you take that (sixth) tequila shot tonight, you can do some good to raise awareness for a chronic disease. While you’re chasing with that lime, snap a selfie. The Lyme Disease Challenge calls for participants to bite into the citrus fruit and donate $10 to the International Lyme and Associated Diseases Society to raise awareness and funds for lyme disease. After The Real Housewives of Beverly Hills star Yolanda Foster, who has the disease, shared a photo of herself and her husband biting down, other celebs like daughter Gigi Hadid and Erin Andrews are participating. See the pics (complete with funny faces) below! And if you get challenged, suck up the sour or donate $100 to the cause.