You know you're cheap when...

... you're at the store and you see that the canned tomatoes you usually buy are on sale, a dollar off the usual price, and - after deciding that you'll also need to call your boyfriend and alert him to this excitement so that he too can bring home many, many cans - proceed to bring to the register more cans than you know full well you could carry home (and you will be carrying them home, because you're too cheap to use that Metrocard)... only to get rung up and see that this sale was not entered into the system... only to stand your ground, while the cashier first attempts a price check and then just goes herself to check the price, only to tell you that it wasn't these cans that were on sale, but some other product. Boo.