While the Golden Globes demanded the public’s attention Sunday night, “Girls” was charting new territory in its Season 4 premiere. Though even the show creators joked it’s hard for “Girls” to do any kind of funny sex they haven’t already done, the episode managed just that by (spoiler alert) featuring Marnie (Alison Williams) and Desi (Ebon Moss-Bachrach) engaging in some butt play. But while the scene itself is very NSFW, Williams and acting partner Moss-Bachrach kept things the picture of professional on set.

Speaking to Vulture, Williams opened up about preparing with crew members for the scene:

Because of my wiring, I read it in the script and I went into total action mode. I got everyone together and I was like, “All right, Grace [in wardrobe], you and me — we’re going to come up with something so ingenious that he is going to feel comfortable.” I mean, think about where he is, right! It was our first day back of shooting and it was my birthday — everything was happening. I grabbed the makeup girl and said, “I want to smell like a cake,” so we put vanilla cream everywhere so everything smells good. And then I’m like, “Grace, we’re going to rig something invisible from the side but that feels like a pillow when he puts his face into it.” And, that’s what we did! You wouldn’t know; it’s total TV magic.

In the same interview, showrunner Jenni Konner commented on Williams’ commitment.

“She was game — a down girl,” she said. “She’s a serious actress and she takes it all seriously. She was brilliant.”

Moss-Bachrach spoke to MTV about the trust Williams put in him for the scene.

“You’ve gotta have a good trust with your scene partner,” he continued. “Allison and I really like each other. I trust her and I think maybe she had to trust me more for that particular scene, but I think she does. It’s fun. It’s a comedy.”

To wrap up: Allison Williams takes her craft seriously and “Girls” can still surprise us. Here we go, Season 4!