Answer:
This question requires a personal answer, since you have to describe your own day with your mother. Anyway, I will give you an example of how this question can be answered.
Step-by-step explanation:
Mother's Day was one of the funniest of my life.
My mom and I decided to go party at an amusement park, and I had never been to one!
We got on a lot of fun games and laughed a lot.
There we also ate hamburgers and bought cotton candy.
My mom said it was one of the best mother's days ever!
To answer this question you just need to use your imagination. You can describe a real day in which you and your mother had a lot of fun, or you can also make something up.
Just think about what a fun day would be like for you, and tell that story.