Don't even try to rationalize the show or Adult Swim orginals in general, Sealab is one of the most insane cartoons on tv today outside of The Ripping Friends All of the people on the show have short attention spans and/or ADD.
My favorite was is either the Pro Shop one where Murphy goes cruising around sealab looking for a golf store or the one with the kid from the Make a Wish foundation that is a fraud or better yet the credit card one or the one about the drugs that gives people superpowers.