put hair removal cream in his shampoo

take a shit and put it in his coffee maker

wtf man? dont make someone literally eat shit

No, put it in the coffee basket. do you want to wake up and find a huge turd in the basket. you have to deside are you going to try to clean it or go with out.

makes more sense

Hahaha, that is something a dumbfuck named iwanttokillyou would do...

If someone shit in my coffee maker, I would be pissed beyond belief at the moment. I NEED THAT SHIT TO STAY AWAKE.

Another thing you can do is move something of his to a different place but still in sight every third day, then fourth, then third, then fifth so it seems random..He'll think he's going insane or something..works best if it's the same item(s). He probably won't notice it for a long time, but it's so subtle it will eat at him, until finally he realizes things are subtly being altered around him, and he will get paranoid.

or inch by inch move his funiture around. also with the coffee thing...you have to use the coffee maker too...so your kinda fukd too

That is an awesome idea if done subtly..inch by inch week by week..

Unplug the hose that fills your toilet with water and adjust it so that it is pointed towards where he would be standing while pissing, this way when he flushes the toilet he gets sprayed with water. Its a little black hose inside the tank of the toilet, not the one with the valve at the bottom. Im sure theres a couple videos on youtube about this.

superglue all his stuff to whatever its on. like toothpaste to the counter. remote to the coffee table, etc...