So a couple days ago me, a friend of mine(male), and 2 girls were hanging out (no one has sex with each other and nothing romantic), my friend starts to talk about how he joked around with another girl after they had sex (by telling she was like a bear in bed) and I told him to shut up because there are females around us and I think it is wrong to talk about sex near girls unless I am plating them. Thoughts? Is it normal or wrong?