When you won the bid, you established a contract. By not paying for the item, you broke the contract and you can be sued and yes, he can do an intercept. And if he has your address, it is a simple step to figuring out who lives there (reverse address look-ups).
And it doesn't matter if you told him you were going to pay or not - the minute you placed your first bid, you agreed to the Terms of Service which compels you to pay for any auction you win. Just out of curiosity, what did you think was going to happen?
Just another reason children aren't suppose to be on eBay. I remember your last question about taking something that wasn't yours in the locker room. How did that turn out?
Wjy do you call ebay "stupid" when YOU are the one who didn't pay for an auction that you won?
yes he can do it. Pay up or lose it