Homey needs to calm down with those narrow stages. Adding booze to that probably isn't helping either. Luckily, Dave Grohl is made of rubber these days.
Recently at the Consumer Electronics Show in Las Vegas, Dave sauntered on a verrrrrry small bit of stage over to the bar. He got his Bud Light, but he also got his BUTT light-ly hitting the ground. He's fine. His leg is fine. He didn't even miss a beat playing "The Pretender" aka when the band breaks it down into a jam session.