These have all been really good stories of revenge ... lets see if i can contribute ....
Well, go for drinks and get a nice big bloke to come over, accuse him on hitting on his girl and knock him about a little. Physical pain is a bitch and a black eye is a good sign of showing everyone you got your arse kicked.
Then let lil leecie, console him and take him back to his place where she will help him "clean up" himself. while He is fixing himself i vouch you apply the powdered milk plan and also stow away a crab of some sort in a very hidden place (ie. under a draw [take the draw out, put crab in ... replace draw) Trust me IT STINKS and in a few days the house will stink and he wont know whats going on. Plus a note can be left with it with evil message ... might be moldy by then.
Lil leecie can then make him a coffee with ... some sort of sleeping aid ... then watch a movie, or chat till he sleeps. Then when asleep, take all his clothes from the house and put them in a big dump bin, shave his eyebrows and underarms (cause thats funny) and write things on his body with a graffiti pen (apparantly they dont come off for ages .... I suggest words like ... "I am a using abusing fuck to women, dont sleep with me ever" and "This way to mr tiny" .... if he is heavily sedated you can stick a toy car up his arse ... or just glue his arse shut if he is a little too awake.
Then just pour fish sauce all over his house and maybe ... i dont know, how bout you change every number in his phone to that stupid rejection line.
remember to take photo's and send something to his parents ...
Take what you will out of this revenge plan ... the guy is a cockhead ... ive met him ... and i would be only to happy to stick a car up his arse and glue it shut.