Los Angeles, California - Pete Davidson and Machine Gun Kelly stripped down to their briefs in a hilarious campaign for Calvin Klein.

On Monday evening, the longtime BFFs treated fans to one of the best live-streamed photoshoots.

Pete and MGK teamed up with the fashion brand for a Instagram live take-over where they modeled their Calvin Klein briefs.

The duo took turns playing out their bromance by striking various sensual poses on a large, white couch.

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During the stream, MGK hilariously poured popcorn into Pete's mouth as he sat perched on the couch.

But what really got fans talking was when the Big Time Adolescence costars got candid about their "packages."

Once they were sporting their underwear – which visibly showed both of the pair's bulges – Pete commented to his bestie, "Nice stuff, by the way. I get it now," referencing MGK's manhood.

When speaking about himself, the 28-year-old remarked, "I’m a grower for sure. I’m not really a grower or a shower. It’s actually the same small and hard. It’s actually a scientific wonder."

The pair then joked that Calvin Klein should hire them as models because, as The King of Staten Island aptly put it, "We really brought the horniness. We bring the horniness."

The company concluded the event with a photo of the friends peeking at the camera.

"Did we nail it or did we nail it," the caption for the post read.

But, before the night was over, MGK also mentioned his friend's "BDE" – a remark that was made by Pete's former fiancé, Ariana Grande.

"Pete Davidson also has the simile to that; it’s called BDE," the rapper said while looking up the actor's name in Urban Dictionary.

Pete didn't disagree with this – but Kim Kardashian may be more of an expert on that these days.