Just listened to a Stern show from '91 with Luke, lying about his age
It was a show from September '91 and Luke Perry's first appearance (of many) on Howards show. It was replayed on "Mastertape Theater" on Howards Sirius channels. In it he claimed to be 21 thoughout the interview but now that we have the internets we can do the math and see he was almost 26 at the time.
Oh well, he can be forgiven I suppose, just thought it was funny.