I know a few toking games. They're kinda dumb but if they're done right then it's fun as hell. Keep in mind I didn't make up the names.
Colors- It's basically holding your breath until the bong/blunt/bowl/joint/etc comes back to you. It gets you really high, really fast.
California Elevator- This is particually for a bong. First, crouch down and start to hit the bong. As you hit it, suck harder and slowly stand up and then right as you pull out the male piece, stand all the way up really quick. The head rush and the smoke all at once is intense. This is my personal favorite.
California High- This is wierd, and I've only done it once. You need 2 people for this one. Do the same first step to the California Elevator, crouch down. Start breathing heavily until you get a little light headed. Take a big hit from whatever you're smoking out of, hold your breath, and stand up really fast. This is when the second person comes in. They have to sort of choke you until you pass out. The smoke gets trapped in your lungs when you're passed out. It's kinda sketchy, that's why I've only done it once.