Can I take my dad's side in an argument with a shop clerk?
Are you sure your dad is right in this argument?
I was on a shop with my dad. He decided to buy some phone accessories.
I'm not sure what the argument is about, but taking your dad's side is expected. Most people would stick by a family member unless that relative is clearly wrong.
I'm avoiding telling the shop clerk that my dad's phone is broken.
Sometimes you need to stand by your parents in an issue that in in dispute.