A QA engineer walks into a bar and orders a beer. They order 2 beers. They order 0 beers. They order -1 beers. They order a lizard. They order a NULLPTR. They t

A QA engineer walks into a bar and orders a beer. They order 2 beers. They order 0 beers. They order -1 beers. They order a lizard. They order a NULLPTR. They try to leave without paying. Satisfied, they declare the bar ready for business. The first customer comes in an orders a beer. They finish their drink, and then ask where the bathroom is. The bar explodes.