Unless you had reason to believe your son was going to harm himself/someone else, partake in some kind of illegal activity...then I can't think of a single way that this isn't a YDI.

No sympathy for you there. A fitting ending to you invading his privacy.

You shouldn't go snooping around in someone's personal belongings. You have no right to do so

I'd get him back somehow. Glitter bomb his favorite snack or something. Be creative! ?

YDI I hope your sons traps only become more elaborate to the point of exploding blue ink when you open his personal package. Stop snooping or your kid won't trust you.

Your son is hella cool, and YDI for not respecting his privacy.

If that was my letter, it would have been more explosion-ey. You deserve this. What gave you the right to open the letter? You're not his owner, so his private things aren't yours to touch.

Boundaries were set And you crossed the line Your son was testing your trust in him and you could have earned that trust, .... But instead the opportunity to earn his trust blew up in your face I think you are even

Funny as hell, but, if your parents are still cleaning your room you have no right to privacy.

While I agree with the fact that kids don't have the "right" to privacy, an important part of having & raising kids is to teach them right & wrong & punish them only when they make a mistake. If the kid hasn't raised any red flags, they don't deserve to be treated like criminals. You want your kid to trust you & to know you have faith in them, treating them like children is not beneficial to either party.