Pete Davidson was on the Tonight Show with Jimmy Fallon last night and relayed a hilarious story about how a lie he told Alec Baldwin led to his big weight loss. Pete Davidson said it happened when Alec Baldwin hosted SNL and they were in a skit together that required Pete to be shirtless. Alec inquired about how he stays fit and that's where the lie began. It's very funny. Check out the story, it's at the beginning of this clip.