The pair, who are both in Hawaii filming Mike And Dave Need Wedding Dates, shared their shirtless tyre swinging antics on Instagram, and for that we are truly grateful.
The duo didn't shy away from showing off their ripped muscles as they posed ever-so-casually on a rock.
Pitch Perfect star Adam captioned the snap: "Here's to me being way more muscular and generally more shredded than my lil bro @zacefron. In our off time we jump off waterfalls and nearly escape death. Nbd. Having so much fun shooting #mikeanddaveneedweddingdates this summer in Hawaii."
In another snapshot Zac flexed his muscles whilst Adam balanced on the tyre and gave a thumbs up to whoever was lucky enough to be taking the photo.
Zac shared a slow motion clip as he launched himself off the tyre and even had time to strike a pose before being submerged under water. Whether or not his cap survived the plunge is a mystery...
Aside from unleashing their inner Tarzan, there's a high chance Zac and Adam broke into song. With Zac's High School Musical success and Adam's Pitch Perfect crooning, we like to think the pair held their very own Riff-Off like the ones in the Pitch Perfect films. Dreamy.
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