It’s even better than that. He didn’t drug that coffee, but the other one, the one he isn’t offering to Wilson. He did this because he (rightfully) assumed Wilson would not trust him and ask for House’s coffee instead.
Also noteworthy is that when Wilson drugs House through coffee this very same episode, he does it by drugging the offered cup, because he knows House would never even think to suspect him.
They are insane.
House was sort of like Death Note if there was no death note and Light and L were just coworkers and best friends with sexual tension
