I'm sure you all remember last year's Ice Bucket Challenge.
Well, now there's a new social media craze aimed at raising funds and awareness for another chronic disease.
It's the Lyme Disease Challenge, and in order to participate, one must bite into a lime.
The challenge gained traction after "The Real Housewives of Beverly Hills" star Yolanda Foster shared a photo of herself and her husband biting into the citrus fruit on Instagram.
Since then, other "Housewives" castmates and celebrities have taken part in the challenge.
As per the challenge, participants are asked to donate $10 to the International Lyme and Associated Diseases Society.
And those who choose not to "Take a Bite Out of Lyme" are asked to donate $100.
Here are some of the celebrities who have already participated in the Lyme Disease Challenge:
Yolanda and David Foster
Lisa Vanderpump's dog
Ad-Rock from Beastie Boys
BeastieBoys on YouTube
Citations: Real Housewives stars celebs biting into limes for Lyme Disease Challenge (NY Daily News)