Is there any way to check birthday on PSN?

My friend was a real idiot and decided to make an account on my PS3 with a fake birthday and everything... he had forgotten his account details and is now requiring his birthday information. Is there any way to check the birthday? I've checked Account Management andit's not shown there.

I do not want my PS3 banned because of his stupid actions. :/

Delete his account from your console.

lol, Using a fake birthday won't get you banned.

There's no way for Sony to tell it's fake, unless he bought something with his credit card on your PS3, in which case Sony could track his info down using that. But why would they?

No reason to go through all that trouble to find out someone's... birthday.

Try all combinations...

Ah, he wants to keep his account. His loss I guess.

Delete the account from your PS3, tell your friend to not be an idiot next time.