Tom Hardy and Leonardo DiCaprio have a true bromance. The pair became particularly close when they starred in The Revenant together, and were often heard boasting about each other's performances and their enduring friendship.
Leo was so impressed by Tom's performance in the film that they made a bet:
"DiCaprio predicted that Hardy would get an Oscar nomination for his supporting role as a feral frontiersman who leaves DiCaprio's character for dead after the latter is mauled by a grizzly bear. Hardy bet a tattoo of the winner's choosing that he wouldn't. Hardy lost. Hardy recreates DiCaprio's design on a Post-it note for me. "He wrote, in this really --- handwriting: 'Leo knows everything.' Ha! I was like, 'OK, I'll get it done, but you have to write it properly. source: esquire
And true to his word, Tom was recently spotted with his best-friend's design on his right bicep!