DONT disrespect, shout, ignore, annoy, disobey, disregard, disturb our parents. They were looking after us when we were nothing but an easy prey to anything around. They were awake during the nights to make us sleep and feel us secured. We may not remember a thing in the childhood but with time, with age we realize the struggle they might have gone through to help us reach where we are today.
say not to them a word of disrespect, nor shout at them but address them in terms of honour. And lower unto them the wing of submission and humility through mercy” [al-Israa’ 17:23-24]
It is forbidden to dishonour them by saying or doing bad things to them. If the child does that, then he has to repent to Allah and seek his parents’ forgiveness, so that he may escape the punishment.
And We have enjoined on man to be dutiful and kind to his parents” [al-Ahqaaf 46:15]
And We have enjoined on man to be dutiful and kind to his parents” [al-‘Ankaboot 29:8]
but behave with them in the world kindly” [Luqmaan 31:15]
One of the most important acts of worship that the child is asked to do with regard to his parents is to obey them, to do as they ask and to refrain from what they tell him not to do. So if his father tells him to do something, he hastens to do what he is told, and if he tells him not to do something, he hastens to give it up, so long as that does not involve any disobedience towards Allah and his Messenger, because there is no obedience to any created being if it involves disobedience towards the Creator.
Then he can make du’aa’ for them and pray for forgiveness for them, especially when they grow old and weak and are in need of someone to treat them kindly and take care of their needs. In Sha Allah.
May Allah subhanawu T’ala forgive us and our parents and guide us all in the right path. May Allah subhanawu T’ala bless us to learn from the authentic knowledge and spread the knowledge of Islam to millions and earn reward till the moment knowledge exist.  Ameen

Please check the following  link  Virtue of respecting the parents   
to learn  that respecting your parents is an act of worship that has tremndous benefit in both this life and the hereafter

Virtue of respecting the parents