Spacebar; my tab key functions as a second spacebar, and only performs the usual tab functions when I hold Fn. HA!
Alright, here's another: You find yourself in a room with an exact clone of yourself. They have your memories and your skills. The room has nothing in it, and you will be able to leave in 2 hours, at which point the clone will disappear and nobody will know about it.
Now: Do you fight the clone...or do you fuck it?
Bear in mind, this isn't some kind of false dichotomy; those are really the only options. The room is empty, so there's nothing to entertain yourselves with. It's an exact duplicate of yourself, so conversation would be boring. This really only leaves two options: brawling or boning. If you're fighting a clone with a guaranteed expiration date, they sure as hell aren't going to hold back; it would be a harrowing and exhilarating experience. If you're fucking them, you and it both know exactly what pleases you; it will probably be the best sex you'll ever have.
So? Which one? Also, anyone who wants can feel free to answer, not just the next poster.