John Mayer Can Go Jiu-Jitsu On Your Ass 5/15/2008 4:03 PM PT Dating Jen Aniston must be hazardous to your safety -- why else would John Mayer be taking martial arts classes in NYC? You see this cat Mayer is a bad mother--. We can dig it. See Also Mayer to Aniston: Puff On This!John Mayer on AOL Music Share on Facebook Share on X John Mayer