Jeffrey Jones — who played Principal Rooney in “Ferris Bueller’s Day Off” — turned 64-years-old today … and he celebrated by pleading guilty to a new charge in his ongoing sex offender case.
TMZ has learned Jones appeared in L.A. County Superior Court — where he pled guilty to the charge of failing to update his sex offender registration.
Full story: ‘Ferris Bueller’ Star — Guilty in Sex Offender Violation | TMZ.com