Well, we now know why Pete Davidson gets the most beautiful women in Hollywood.

The ‘SNL’ star says his manhood is a “scientific wonder.”

The comedian and his bestie, Machine Gun Kelly (MGK), took over Calvin Klein’s Instagram on Monday evening.

MGK and Pete started the live out fully-clothed and discussed how they were preparing for a possible Calvin Klein photoshoot.

“Obviously fluff up the boys, stuff a banana in there,” Pete advised to MGK.

MGK suggested stuffing socks in his underwear to help out, Pete advised you can’t go into the photoshoot cold.

“You can’t just go in cold. I am a grower for sure,” Pete told MGK.

I’m not really a grower or a shower, it’s actually the same small and hard,” he joked. “It’s actually a scientific wonder.”

No WONDER he was able to get Kim Kardashian, Ariana Grande and Kate Beckinsale.