There's a scam where two people go into a store and pretend not to know each other. One gets change from the other, but doesn't have the correct change. They

There's a scam where two people go into a store and pretend not to know each other. One gets change from the other, but doesn't have the correct change. They then get the cashier involved to help with the "problem" by making change from the register till. But, via a fast-past set of confusing operations, trick the cashier into giving incorrect change. It's still considered stealing if you intentionally trick the cashier into giving you incorrect change.