Zac Efron never needs a shirt.
The 27-year-old actor is clearly having fun while in Hawaii and is definitely making us all a little jealous with his latest "Cowabunga" moves.
In a video he tweeted out on Sunday, it's hard not to notice his ripped abs as he swings on a rope and makes a gigantic splash into the lake.
Fun in the sun aside, though, Efron is not merely vacationing on the tropical island. He's actually filming his upcoming movie Mike and Dave Need Wedding Dates with co-star Adam Devine.
PHOTOS: The Most Important Zac Efron Pictures
Over the weekend, Efron shared a pic of himself and Devine in the aforementioned lake, and it's hard to focus as he flexes his muscles.
A fan on Twitter summed it up best, writing, "Every time Zac Efron is publically photographed shirtless, an angel gets its wings."
Devine, 31, even joked about Efron's muscles.
"Here's to me being way more muscular and generally more shredded than my lil bro @ZacEfron," he wrote. "In our off time, we jump off waterfalls and nearly escape death. Nbd. Having so much fun shooting #mikeanddaveneedweddingdates this summer in Hawaii!"
WATCH: Zac Efron and Robert De Niro Go Shirtless
Mike and Dave Need Wedding Dates is expected to hit theaters on July 8, 2016.
Check out the video below to see Efron's butt double.