TS not talking about incest lah.
advice to TS. If you worried about your daughters getting cheated by guys, then you can get this:
but before you do that, you should tell them stories that start like this, "Ah girl ah, you know next time when you grow up, you must be careful of men who are horny bxstards...i give you case study of your papa who like to fxxk maids and FLs" and also please get this for yourself: