Dave Grohl BOOTS Violent Fan 'Get the F**K Out!'

7/13/2011 4:23 PM PDT BY TMZ STAFF
Dave Grohl dropped the HAMMER on an unruly fan during a Foo Fighters concert in London Monday night -- stopping the music to yell at the guy ... "Get the F**K out of my show RIGHT NOW!"


You don't mess with the Grohl.