Every kind of annoying one's parents, whether in word or deed, is an act of disobedience which means that the child is a sinner, because it goes against the command and prohibition of Allah, Who has commanded us to speak to them kindly and treat them kindly. Allah says (interpretation of the meaning): “but address them in terms of honour. And lower unto them the wing of submission and humility through mercy” [al-Israa’ 17:24] It is forbidden to dishonour them by saying or doing bad things to them. Allah says (interpretation of the meaning): “say not to them a word of disrespect, nor shout at them” [al-Israa’ 17:23] If the child does that, then he has to repent to Allah and seek his parents’ forgiveness, so that he may escape the punishment. - Shaykh Sa’d al-Humayd