Tense and I am in Tense

We studied about tense
I like it and it's not non - sense
Not that hard, not that simple
It is pleasant like a river's ripple

There are another meaning for every word
Just for you I could write it on a board
I used another meaning for tense
Like being anxious or nervous, and cannot relax is next

Because when I'm going to school
I could feel this, you fool!
Everyone can feel that
But mine is from my reddish gut

This thing we feel is really normal
It is like me and my difficult subject that brawl
My heart pounds and bounces like a ball
It's like I really want to roll

I think this is enough for you to understand
It's like a certain thing with another brand
A word with multiple meanings
You should read to learn this things