Arizona women's basketball coach Niya Butts did it first.
Now football coach Rich Rodriguez is getting in on the fun.
The concept is simple: someone gets called out to make a donation to charity. If you accept and complete the challenge, your challenger donates $50 to the Kay Yow Fund, which was created in honor of former NC State women's basketball coach Kay Yow, who died of breast cancer in 2009. If you refuse the challenge, you owe the fund $250.