What sex are they? ZIPLOC BAGS Male, because they hold everything in, but you can always see right through them. SHOE Male, because it is usually unpolished, with its tongue hanging out. COPIER Female, because once turned off, it takes a while to warm up. TIRE Male, because it goes bald and often is over inflated. HOT AIR BALLOON Male, because to get it to go anywhere you have to light a fire under it and, of course, there's the hot air part. SPONGES Female, because they are soft and squeezable and retain water. SUBWAY Male, because it uses the same old lines to pick people up. HOURGLASS Female, because over time, the weight shifts to the bottom. HAMMER Male, because it hasn't evolved much over the last 5,000 years, but it's handy to have around. REMOTE CONTROL Female, it gives men pleasure, he'd be lost without it, and while he doesn't always know the right buttons to push, he keeps trying.