Old guys can still rock out with the best of 'em ... something Mel Gibson and Sylvester Stallone proved Friday night in Los Angeles at a Kiss performance.
Mel and Sly attended a benefit event for a charity Gibson works with called Mending Kids International ... both actors were limited in movement -- but it's clear they're very into the performance.
If you look closely ... Dog the Bounty is also jamming out in the background.
Rock and roll all night.
Read more: http://www.tmz.com/2014/02/15/mel-gibson-sylvester-stallone-danzig-cover-rock-out-video/#ixzz37a4AD2Is