To step in dog shit, dirt, or any other nasty substance and proceed to dropkick your opponent in the jaw. leaving behind a smear of nasty on their face, and they have to deal with the brutal pain of a dropkick.
Shopkicking involves using GPS-enabled smartphone apps, such as ShopKick, to check-in to stores and find and scan merchandise; users are rewarded with 'kicks' or points that can be used to purchase items. Users get discounts and other rewards as well. To put is simply, shopkicking is mobile scavenger hunting, while you shop, that pays.