You Can't Make This Stuff Up

I stopped at Walmart this morning to pick up a few things and the guy in front of me at the register was buying 2 packages of Dayquil capsules, 2 packages of Nyquil capsules, and 2 bottles of Nyquil. Not too unusual, getting ready for flu season. The register beeped and he was informed that he was only allowed to buy up to 3 packages and he would have to put the rest back. This was not a kid, mind you, he was quite obviously an adult over 40. I could not believe what I was hearing. Who makes up these rules?