The stars of the gay drama Call Me By Your Name sat down with Ellen DeGeneres this week to discuss how they worked on their chemistry for the film's intimate scenes.

Armie Hammer and Timothée Chalamet told the talk show host that they had one "hilarious" rehearsal to break the ice in the beginning that led to them locking lips for longer than they expected.

Director Luca Guadagnino told the actors to flip to scene 71 in their scripts, acting as though he just "arbitrarily threw out a number," but the men soon discovered it was a scene in which their characters are making out in the grass.

Ever the professionals, the boys obliged and got down to business.

“We’re making out, and we're making out, and we're making out, and no one’s saying stop," Hammer says. "And all of a sudden, we both kind of stop and look, and Luca had just walked away and left us right there, rolling around in the grass."

"And that was our only rehearsal," he added. "It was a bit of an icebreaker.”

Check out the rest of the interview, including Chalamet's discovery of razor burn, below.