Is doing something that displeases one's parents while they are not present considered an act of disobedience?

The son must be keen on his parents' satisfaction and avoid angering them, for the Lord's satisfaction is in the parent's satisfaction. Obedience to parents is obligatory if their command or prohibition is for a valid reason. However, if it stems from foolishness, obedience is not obligatory, but extreme caution must be exercised in disobeying the parent. The son should not embark on such a disobedience except after consulting people of religion and intellect and ensuring that there is no valid reason for the parents' stance. Disobeying a parent is very serious.