Totally! i remember going to a disco (!) with a sister and she ended up snogging some "worldly" guy and i told her to tell her dad about it (who was an elder). Actually i had forgotten about that until I met up with her recently and she reminded me (she's out of WTS now too). The hypocrisy of it (on my part!). Amazingly we stayed very good friends and probably will be for life.
Another time my sister and I went to a house party and there was some heavy(ish) alcohol consumption so we left early. Then the next day we went self-righteously round to their house and sat down in their living room with the hosts and their parents and told them why we left early and why we thought their party was out of order. I'm going red thinking about it!
All i can say in my defence is I was young and niaive. What a prick!