Paul McCartney crashed Black-ish star Deon Cole’s stand-up set at the Hollywood Improv on Sept. 17 after both reportedly “got high” backstage. "I got high with my friend tonight, and we had a good time,” Cole told the crowd before telling them to “please give it up for my friend, Paul McCartney ." As the surprised audience applauded the legendary musician’s arrival, McCartney leaned in and whispered a few words in Cole’s ear. "I had to smoke, a...