Then be extra thankful, but don't think that you won't ever get caught. Plus, you could still get in trouble for it...
When I was a kid, I egged a house with some of my friends. Even though we knew we could get in huge trouble because it was against the law, we thought it was funny, and a few people bragged about it to other kids. That's what led to us getting caught...one of those kids told their parents, who told the police, who came to school and told us all that we'd be assigned a probation officer, do hours of community service, and have this on our record until we turned 18. Suddenly it wasn't so funny.
Seriously, the first thing I'd do if I were you is stop telling people about it.