W. Austin Gardner
Blasphemers and disobedient to parents in the last days

II Timothy 3:1 This know also, that in the last days perilous times shall come. 2 For men shall be lovers of their own selves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy, 3 Without natural affection, trucebreakers, false accusers, incontinent, fierce, despisers of those that are good, 4 Traitors, heady, highminded, lovers of pleasures more than lovers of God; 5 Having a form of godliness, but denying the power thereof: from such turn away.
Blasphemers
In the last days, men will be blasphemers. That word means defaming, denigrating, demeaning, slandering. This speaks of what men will do to God and others. These people hurl abuse and speak evil. It is the idea of cursing God or others.
The blasphemer loves himself and not God. He spreads negative information about God and others. He insults God.
Disobedient to Parents
Children will not show respect to their parents. They refuse to be persuaded. They refuse to obey. To rebel against your parents is, in essence, rebelling against God. God saw honoring and obeying parents as so crucial that when He gave the Ten Commandments, He added that He wanted children to obey their parents.
All children should speak well of their parents, be polite to them, show them respect. Our relationship with our parents is very indicative of our relationship with God Himself.