I was in the gym and this younger guy I know was like, "DUUUDE! Check these ooout! New earbuds!" He pulled out this little, high tech case and, as he opened it, I hear a faint hissing sound like the case is pressurized or something. I was like, "Dude! What was that!? The case?" He just keeps on with showing me the earbuds and telling me how awesome they are. And I'm just totally flummoxed by the source of the noise. I can't figure out if it was the case or a noise he made with his mouth. And I can't see anything because I'm not wearing my stupid rough ridin' old person trifocals. I'm just standing there, like an outdated, confused, helpless old man. So, I interrupt, "Was that noise from the case or your mouth???" He says, "Oh, my mouth. And they're waterproof so I can wear them in the shower and ..."