Happy bike riding, in the dark

After dinner, it was dark but mama said I could go for a bike ride. Yay! I now like to be Toad, a friend of Mario and Luigi, when I'm riding. His head looks a little like a helmet.

We got out my bike and mama put the bike light on it. I rode happily down the street.

We got to the next street over and I looked back at mama and said "No, I love you!" and that made her happy and she said "No, I love you!" and I said "No, I love you!" and she said "No, I love you!" and I said "Oh, ok, I'm sorry".

Then a minute later I put on my brakes (which I have just recently learned and at which I am already quite adept). "Oh! We fohgot my helmet!!!! We better go back home!" And mama was so surprised but realized I was right. And I felt very bad for forgetting my helmet and I apologized. Mama said "it's not your fault".
To which I replied "Oh, it's your fault!"
Mama just said that it's nobody's fault, it's just that neither of us remembered.

But I know that really means it was her fault.