SWISS ARMY KNIFE - male, because even though it appears useful for a wide variety of work, it spends most of its time just opening bottles. KIDNEYS - female, because they always go to the bathroom in pairs. 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. WEB PAGE - female, because it is always getting hit on. 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. Because it is an effective reproductive device when the right buttons are pushed. Because it can wreak havoc when the wrong buttons are pushed. ZIPLOC BAGS - male, because they hold everything in, but you can always see right through them. 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...Ha! ... You thought I'd say male. But consider, it gives man pleasure, he'd be lost without i t, and while he doesn't always know the right buttons to push, he keeps trying!!!