bumptious: arrogant or conceited. Bumptious is ambiguous enough that one might mistake it for a compliment, especially if on the dance floor, where it can be taken as a comment on how well one can do the "bump and grind."
And you know that statuesque but self-important guy or gal whom you love to look at but just can't stand to be around? Scrumptious and bumptious, baby!