WATCH: Dave Grohl Talks About Being High And Playing With Taylor Swift

Dave Grohl performed a few acoustic tracks at Cannes Lions 2016 last spring.  Before launching into the famous Foo Fighters track "Best of You," Dave decided to tell a great story involving Taylor Swift, Sir Paul McCartney and being high. The headline says it all really.  I don't want to spoil the story by re-telling it, so just watch. Besides Dave tells it…