Ano ang magandang explanation na ibigay sa anak nyo when they accidentally catch you and your partner having sex? Especially when they're not yet ten years old?

How old is the child ba? If the child is a toddler, maybe you could divert his attention to something else or you could pretend that you're just cuddling. But if may isip ng ung bata, you can ask him what he saw kasi baka iba naman interpretation nya and we're just over reacting. If he asks what you are doing, you try to explain in a subtle way that a kid would understand, like you're cuddling his mom because you love her or you miss her, something like that.