What is the nastiest thing I've done for revenge?

A few years ago my best friend became homeless. She had been through a break up earlier in the year, and was living in a shared house. She had a big fall out with one of the other residents, to the point where she was assaulted. 2016 had not been her year, so my mother and I decided to give her somewhere to live.

She could stay with us for as long as she needed, under a few conditions. She was to give us a bit of money each month for food, and look for somewhere else to live.

However, this is not how things turned out….

She would disappear for days on end, sometimes without calling us. We never knew where she was or if she was ok. Sometimes she would return at 3 or 4 in the morning, expecting us to let her in. If we didn't answer, she would ring the neighbours. We lived in a block of flats so when the intercom went off, it would wake everyone up. But this was just the tip of the iceberg.

She brought men back to our flat on more than one occasion. They would turn up at the door with her, then drive off. One night, she got into an altercation with someone, and they drove away angrily.

It was clear she wasn't looking for somewhere to live, so we thought we'd prompt her. We managed to find her a room at a shelter. Not the best of places, but better than nowhere until she finds somewhere permanent. She did not take the room and in fact, never called the shelter back. She had absolutely no interest.

One day I walked into my room and found her wearing my clothes. She tried to claim they were her clothes, and we had a huge argument. After that, she disappeared and didn't come back. After three months, she still hadn't given us any money and we didn't know where she was.

We found out what really happened at the shared house, after paying a visit.

One of the other women was angry, and wanted to know where my “best friend" was. Apparently, she had stolen things, brought strange men back to the property almost every day (sometimes more than one) and sold this lady's kittens while she was on holiday. I also heard from the landlord that men had moved out because she'd harassed them.

We didn't hear from her until a month later, when she demanded her belongings were returned. She'd left a few bags of clothes at our flat, but was unwilling to come and collect them. She wanted us to meet her in a city that was almost 20 miles away, and didn't tell us who she was bringing with her.

At this point, my mum put her foot down and refused. If she wanted her belongings back, she was going to have to come and collect them.

My “best friend" arranged to come to our flat three times, and every time she was a no show. Out of the blue, she changed her mind and threatened to call the police if we didn't deliver her clothes immediately. My mother refused, and the police paid us a visit.

We were warned “not to contact her" as apparently we were harassing her. However, the police weren't going to return her items. By this time, it had been over three months since she left her clothes at our property. She had been given multiple chances to collect them and she didn't. The items were now legally ours.

As you do, we went through all the bags to see if there was anything we could sell, but what we saw was nothing short of shocking!

She had only one top and one pair of jeans in the bags, and they were both mine! Everything else was lace underwear, Ann Summers outfits and night dresses. She didn't have any socks and only one pair of trainers. Some of the outfits and underwear were difficult to describe, but you could tell it was all brought at a sex shop.

If that wasn't bad enough, it was the smell and condition of all this underwear that shocked us.

Being brutally honest it smelled like cat pee. As if it had been left next to a litter tray and not washed afterwards. There were stains all over the underwear. Brown stains, white stains and red stains. A few of the thongs were old. Looked as if they had been worn repeatedly for a long time.

At this point I'd reached the end of my tether. This was disgusting. I decided to do something to teach her a lesson, and it was one she will never forget.

The internet can be a funny place when you have enemies….

I started a Facebook post, uploading all images of the underwear and describing the condition it was in. I went into detail about who's it was, what had happened and all the events that had taken place over the last six months. I also stated that is she ever contacted the police on my family again, this post would only be the tip of the iceberg.

Within a few minutes, people were responding to it. Some found it amusing, and showed the pictures to their friends and family. Some commented on it saying what a dirty s*** she was. Others made jokes or tried to hazard a guess at how the underwear got into that condition. We knew she wasn't in a relationship, so its all left to the imagination.

She was humiliated in front of everyone she knew. Her friends, her family, her ex's, everyone she went to school with and even people who didn't like her. The best part was, there was nothing she could do about it.

We found out she had moved in with a married man and got pregnant within a few months. Though paternity is questionable.