Revenge by pee, one drop at a time

I just want to preface this by reminding everyone of how good of a friend I am.

Okay so. Awhile back, my friend was living at home during grad school to save some money. I'd go over to her house often, and it would be really fun because her whole family was there. However, there was one freeloading roommate that the mother, Elise, didn't have the heart to kick her out. Three months turned into a year, and the freeloader (a friend from work) didn't show any signs of leaving.
Now let me tell you, this woman was awful. She contributed no money for rent, or dinners out. She was even mooching off the family's cellphone plan! Elise didn't want to be the one to tell her to leave, so we decided to take matters into our own hands and drive her away, so she'd leave voluntarily.
She never liked to pick up her dog's messes, but, conveniently, the dog never made a mess in her room.

So up the stairs i went, and creeped into her room while she was in the livingroom downstairs. I pulled my pants off, squatted down- and let those droplets flow. Yup, that's right. I took a piss on her floor. It was a long one, too.

Needless to say, she was gone within the week.
Are my tactics of freaking people out normal ?