When his writers are on their game, David Letterman's monologues can roll up all the week's best memes into a mostly entertaining four minutes. Last night was one of those moments, as the host touched on subjects ranging from Miss Universe, Arizona's recently-overturned immigration law, and Snooki and Obama's frequent vacations, while weaving in a "rampant bedbug" theme.

But, of course, the money line was when he quipped that the president, "will have plenty of time for vacations after his one term is up," which received considerable applause by the studio audience.