I just saw this video about teamworking : it was very fun and what can i say? just keep your piggie thinks off the office ! Not joking, that's can be an example of miss understanding about the roles in a team.
To be a group leader doesn't mean that you can do whatever you want or worst that nobody can tell you that you are inappropiate.

I'm starting to enjoy this sit com, really!
Ok, if you're working in a team is better to keep your private calls private!