Guitar meets bicycle

There was an acoustic guitar living in my apartment for a few days. Frank has to learn how to play it for the show that he is in. He was practicing the other day and he is quite good. He wanted it to be at his apartment, and as we all know Frank does not want to take the subway unless he has to, he would rather bike. This means that he gets to show his no handed skills on his bike while transporting the guitar back to Brooklyn.

Ok. So of course Frank can manage to ride his bike and carry a guitar back to his house, and I'm sure he could do the whole trip only using the free hand when he needs it. But that is not ok with Mom.
She got scared that something was going to happen to him. So she told him that she only wanted him to do it if he kept one hand on the bike at all times.
Mom is crazy, and ended up making Frank have a sore back when he got home, because he followed her instructions.
She should have trusted his skills. Next time she will.