Each Bottoms Up shot glass is helpfully labelled ?drink? so you know which side to fill. Knock it back and flip it over, and you get a similar-looking, though decidedly different message.
This sort of typographic magic is called an ambigram a calligraphic design that manages to squeeze two different readings into the same set of curves. The curves have a third meaning as well: Hand over those car keys, buddy!
Fred have packed two oversized 4-ounce glasses in each colourful gift box.