The Trickiest Trickster
Well, depending on the tattoo, this might have been beneficial for this dude. However, if the tattoo was something corny and relationship related, this dude is going to feel the sting from his actions for the rest of his life. Don't get matching tattoos with your significant other, it's a bad idea.
Just Cleaning His Things
It's best to avoid behavior like this because you can get taken to court for destroying someone else's property. But, if you've ever been cheated on, you might understand where this person is coming from. Don't destroy your ex's things, destroy their life, that's perfectly legal.