At weddings, and other events where children are present I do a lyrics check also. I did have an incident a while back where I thought my karaoke version of a song was a clean version; but it was not and the singer went with it. The party coordinator came up to me and was quite upset. Made sure everything was good the rest of the night and all was good, even got a good tip.Any time people request a song I don't know, out pops the i-phone and I do a lyrics check, if it comes up bad it doesn't get played. My card is VERY specific about what I will and will not play. I go over that issue specifically with clients before I accept gigs. It has lost me a few gigs, but it has gained me many more from schools and concerned parents than I have lost.