Remember, I lived in boarding school for 4 years. I knew a thing or two about pranking.

Presently, I am a PhD student who lives alone and is currently appreciating every moment I no longer have roommates.

I went to a private, boarding school for most of my life. It was British-based and if you're familiar with the "Harry Potter" books, that's a great example of the way my school was run. Most of the kids I hung around with went to a different University than mine and I was quite frankly was pleased as punch to attend University and live in a dorm with new people I'd never met before, considering I went to school with the same crowd every day.

...this joy lasted about a week.

Two of my roommates were spectacular. One was not. We lived in an 'appartment style' dorm, which meant four bedrooms centred around a common kitchen and sitting room. There were also two bathrooms to be shared.

I was initially quite pleased by my roommate. She had decent taste in music it appeared and said to me that she was a neat-freak and liked/wanted to keep the bathroom clean.

Fantastic! Cleanliness was my only real concern, as hey - we had our own rooms, so apart from sound? Do what ya want!

Cleanliness it soon transpired however was NOT as high a priority as was initially made out. She NEVER did her dishes. To the point where if the rest of us wanted to use the sink, we'd have to do them for her. Not to mention she was CONSTANTLY bringing home guys!

A different one every night!

I complained one afternoon, saying that I wish she would do her own plates once in awhile and I was sick of cleaning up after her.

...turned out she was in her room when I said this and she hated me ever since...

Now - let it be said I am not a confrontational person. I decided to let her have her opinion of me and very politely put up with her sleeping around the best I could. She took full advantage of this, but I bided my time. Meanwhile, her 'sluttiness' was starting to get her in trouble. The guys she'd hooked up with and then left were starting to get a little annoyed with her infidelity...this is important to the story.

When the other two roommates left, the girl decided that since I was so 'nice' and non-confrontational, she could just be an utter bitch. Big. Mistake. I was tired of being shoved around and ready to take some revenge. Remember, I lived in boarding school for 4 years. I knew a thing or two about pranking.

That night around 3:00 AM, I went downstairs and emptied a large recycling receptical, then filled it with water from the buidling's fire-hose hookup. The doors opened inwards and I gave her a leaner. A BIG One.

The tidal wave of water in the morning soaked through EVERYTHING - her bed and short-circuting her computer.

Nobody EVER knew it was me - the girl had made too many boyfriend-enemies to even suspect the quiet studious girl who lived next door.

I've had several other roommates since moving into my own house when I started graduate studies 2 years ago, and have never had a worse experience than that.