Weapons I want to see invented:

An air/energy grenade - The way this would work would be to emit a pulse of air or energy, so as to disperse crowds of people who walk too damn slow. If you haven't got somewhere to go, get off the damn path and grovel in the gutter. By disperse I mean propel several metres into the air, into the road, into hell - wherever.

Bullets of understanding -  In essence these are the same as normal bullets You load them into a gun (preferably a .44 magnum - just ask Clint Eastwood) and you shoot them at peoples skulls to pierce into their brain. Rather than kill people these would insert concepts in peoples minds. Obviously it would be much faster than conventional methods. If you're a teacher for instance, and your class aren't grasping a concept just pull out an assault rifle and teach. If these bullets can't be created I guess normal ones would suffice.

Directional Electro Magnetic Pulse Gun - This would knock out electronics in the direction you pointed it at. I would choose to use it on the speakers some arrogant bastards have attached to their mp3 player on the bus. I cant think of anything more insolent than thinking that everyone wants to hear the shit you are listening to. This gun would be fashioned like a brick, so when I have knocked out their speakers and mp3 player, I can throw it at the person and knock them out.

Some form of device to make my bus crash - I cant think of how a device would bring this about, but I wish it would happen. Nothing pisses me off more than people who don't know how to sit on a bus. So I figure a bus crash would help them realise that I'm looking out for them when I kick their ankles. I'll break down the steps for proper seating for you, just in case you are one of the many tools out there:

Ass on the seat. Head facing the front of the bus. Feet on the floor.

Here is the pivotal part: Feet forward, rather than legs bent back and feet back in the other persons foot space.

Here is how things usually are on the bus:

There's obviously more seats in the middle, but that's the layout. Note how the person at the front is given foot room forward and the person at the back isn't given foot room rearwards. There's a reason for that. It is natural to have your feet forward providing you have your ass on the seat. The only reason I  can think the person on the seat in front of me hasn't parked his ass on the seat is because it is sore from too frequent homosexual activity.

Flame thrower - Actually, I know this already exists, but I wanted to register the fact I want one. I made a rudimentary flame thrower on the bus once and got suspended for it. Rightfully so too, I could have hurt somebody, which was never my purpose. Nah, I would only want to scar their face. I hate people who are popular just because they look cool, irrespective of their absolutely horrendous personalities. The other day on the bus some girl closed the window, and one of these popular cool guys shouted in her face repeatedly "fat bitch" until he got his own way. Abusive little bastard.

Shotgun - I guess this one exists too. Ah well.

If anyone knows of a way to disable DansGuardian let me know, its doing my head in at school - no doubt it will block this page.