Freezer bags…. male – because they hold everything in, but you can see right through them.
Photocopiers…. female – because once turned off, it takes a while to warm them up again. they are an effective reproductive device if the right buttons are pushed, but can also wreak havoc if you push the wrong buttons.
Tyres….. male – because they go bald easily and are often over inflated.
Hot air balloons…. male – because to get them to go anywhere you have to light a fire under their a**e. There is also the hot air factor….
Sponges…. female – soft, squeezable and retain water.
Web pages…. female – constantly being looked at and frequently get hit on.
Trains….. male – always use the same old lines for picking up people.
Egg timers…. female – because over time all the weight shifts to the bottom.
Hammers…. male – because in the last 5000 years they’ve hardly changed at all, and are occasionally handy to have around.
Remote control… female – yes, FEMALE! because…. it easily gives a man pleasure, he’d be lost without it, and while he doesn’t always know which buttons to push, he just keeps trying.