“It’s getting HOT in here, so take off all your clothes,” goes the lyrics of Nelly’s early 2000s hit song, so why are we thinking of it in 2022? Zac Efron! That’s why. The 34-year-old Emmy award-winning actor posted a smoking hot shirtless thirst trap picture on his Instagram to close out 2021, and his 50 million followers are drooling shamelessly. Gone is the cutesy Troy Bolton from the Disney classic High School Musical; now we have Baywatch zaddy, and we can’t complain.