"Extreme couponing" is a very real thing. But someone using a million coupons and rebates and discounts is the worst person to be stuck behind in the line at the grocery store. Yes, even worse than an old lady paying with a check.

Megan Wilson was at a Kroger grocery store in Memphis on Friday and she was using a bunch of coupons. But it took a while, and a guy who was behind her in line started yelling at her.

Megan yelled back and eventually he pulled her hair and she fell over with her cart. The guy ran out of the store, and the cops are trying to track him down.

Read more at CBS 3.