Goodmorning. I have something to ask because it's bothering a friend. her 7yr old twin sons ran into the master bedroom when their parents were having sex without knocking. actually, they saw how their mum was giving dad a bj. though they left when dad shouted at them, their parents are disturbed and don't know how to go about it with the kids. how to advise or explain things to the curious kids.Should they be bothered guys?