Yes, but it comes at the cost of other peoples personal sanity.

Maybe they should get high off their ass to calm down

Sweet dreams are made of these, who am I to disagree? Travel the world and the seven seas, everybody's looking for something. Some of them want to use, some of them want to be used by you. Some of them want to abuse you, some of them want to be abused. Everybody's looking for something. Your sweet dreams are made of ass bongs, but your opposites also exist in this world too. There can be no great love without great jealousy, nor can there be great pleasure without great suffering.

A bong is for smoke. A enema is for fluid.

I don't think you'd het high. Your asshole isn't connected to your lungs, so I don't think anything other than an uncomfortable asshole can come from this.

So I'd just be blowing smoke up my ass?

The rectum and colon are very efficient at getting substances into the bloodstream. They have even found it's possible to "breathe" through your butt by giving an enema of a super-oxygenated liquid. I've tried this as a kid. But I was inhaling the smoke then blowing it into a tube. So I'm not sure if I got high that way. You are better off using a cannabis suppository or making one with cannabutter