Comedian Mpho Popps caught Woolworths' attention after posting a video of himself and his girlfriend taking part in the water challenge.
"Siyayithanda" (We love it) was the retailer's response to the video, that has been liked over 5,000 times since it was posted.
The#woolworthswaterchallenge is a viral Twitter joke that is poking fun at how people who buy their food at the upmarket retailer speak.
Tweeps who have participated in the challenge were drinking Woolies water, while Mpho Popps ate atchar.
