Humor: Sex Education?

My eleven year old son and I were waiting to be waited at the mall pharmacy. He was looking at the merchandise on the left side of the counter.
Son: (Reading aloud from a packet) Brand-X Lubricating Jelly, water-based, easy to use, condom-safe. (Pause) Ma, what's a condom?
Me: Er, er, it's a plastic (!), like a plastic bag, a man puts on his penis to protect himself from diseases... But it's not too safe, it sometimes gets ripped... (Satisfied with the answer, despite the faltering introduction).
Son: Ah, yeah, the disease... (looking thoughtful) So ma, why are they flavored?
Me: @.@ (Dazed) It's like, er, perfume, son...Yeah (sniff) They want to put perfume... @.@