Answer:
hide me from your parents if you have done bad academically this year.
I am pronounced as one letter written with three. I come in blue black brown or grey. Reverse me and I read the same either way.
I am an object which is used in baseball during the day I can't be seen at all
My rings are not worth much, but they do tell my age. What am I?
I am a busy worker who is a water mammal.
When someone uses this acronym, you know you've got to pick up the pace