Eric, don't listen to these ruffians. Sure, this is the way to drink rum that has a pirate on the bottle with one leg resting on a rum barrel. If you want to drink anything that is a limited production, has layered flavors, or isn't a proxy for paint thinner then no. The correct way would be on some nicely built teak furniture with firm but deep cushions, under a cover meant to diffuse the harsh noon sun or the afternoon rains, while asking for a refill from a lady in a skirt and bikini top. This is the rum you'll need a nicer glass for.