Regarding covering the mouth when screaming: Several years ago I was sitting in the living room and my then wife was in the yard and started screaming. I ran outside and found that she had discovered a dead iguana in the bushes. She was still screaming.
I covered her mouth with my hand as I did not want the entire neighborhood and the police over at the house.
Perhaps this was a similar situation. There was a misunderstanding and Kav was saying “Okay, Christ, we won’t have sex. No need to alert the world!”