What’s it about Karan Johar’s couch that loosens his star guests’ tongues? Last week on Star’s Koffee With Karan Janhvi Kapoor and her friend Sara Ali Khan ended up talking about their ex-boyfriends , ‘sex with with their ex’, etc.

What does Karan put in his guests’ coffee?

“Nothing,” laughs Janhvi Kapoor. “I don’t think Karan MAKES us do or say anything on his show. We all have a comfort level with him. And Karan is the kind of person who can laugh at himself. He encourages that attitude in everyone around him. We really enjoy his company.”

Janhvi admits Karan’s couch has a liberating effect on his guests, “When we are on the couch we forget sometimes that we have a camera on us. That’s the environment he creates.It is an environment of comfort and fun. It encourages us to open up. But honestly, he doesn’t make us do anything we don’t want to. So I don’t think it’s such a big deal.”