We always love when Zac Efron teams up with his equally sexy brother to deliver shirtless content on Instagram, so naturally we were thrilled when the bros filmed themselves bungee jumping while shirtless. Dylan Efron is twenty-nine-years-old while older bro Zac is thirty-three. If you add up their ages, you get about the number of abs seen in this shirtless video. Dayum boys! Hitting that gym hard.

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A post shared by Zac Efron (@zacefron)

Besides their matching abs, we're lusting the four huge pecs, tons of naturally sexy chest hair, and four hairy stanky armpits seen in these two bungee jumping videos (Dylan also posted some footage from their jump).

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A post shared by Dylan Efron (@dylanefron)

Now, if only Zac Efron and Dylan Efron would bungee jump naked so we could see their penises and balls flopping around mid-air! But wait. What if their penises and balls got tangled? Yikes. Maybe it's not such a good idea after all. Safety first ladies. Where the hell is this post going. Nowhere. Okay enjoy bye!