"Dr. Hal, why do they call 'tighty whitie' underwear BVD's?"
Answer:
You guys and your obsession with underwear, etc. will be the death of me. Ask about women's underwear sometime, why don't you? That's marginally more interesting-- to me. But to return to your question. The initials BVD, which have come to stand for men's underwear in general, stand for the names of the three men who originally manufactured this necessary item of clothing: Bradley, Voorhies and Day. Now you know.