13 funny back-to-school pics show (most) kids are ready to rumble

/ Source: TODAY

Is your social media feed filled with back-to-school pics today? Ours is, and the sweet faces of (mostly) happy kids makes us smile. Here, 13 funny ones show that as the new school year begins, some kids are Ready. To. Rumble.

Thanks to all those who shared photos. Feel free to add yours to the TODAY Parents Facebook page. We will feature more in the days ahead.

1. Rock on

My son and nephew on their first day! 3rd grade and Kindergarten -- ROCK ON BOYZ! Waianae, HawaiiFacebook/ Nan Piimauna Micky

2. Little sis bomb

Ready for 4th grade! With photo bomb courtesy of her little sister.Facebook/ Cynthia Locke

3. Who's ready?!

My big first grader!Facebook/ Teresa Lane Binder

4. All dressed up

First day of 1st grade.Facebook/ Jenny Hays Ford

5. Crazy time

Such goofs on their first day of 4th and 2nd grade!Facebook/ Lydia Lowder

6. Deep thinker

My son is glad that school has finally started.Facebook/ Priyanka Sharma Mehta

7. Don't make me do it

Ben, age five. This is his real thoughts on starting kindergarten.Facebook/ Kristen Zimmer

8. I've had better days

He wasn't too thrilled.Facebook/ Connie Engel

9. Don't go!

Her little brother didn't want her to go!Facebook/ Heather Zivkovich

10. Hear me roar

She said her look was going to be fierce this year.Facebook/ Carrie Allen-Cole

11. Double thumbs up

Connor's first day of 3rd grade!Facebook/ Michelle Schwartz

12. Raise the roof

Class clown...Facebook/ Sarah Visokay-Hendershott

13. Maybe tomorrow

Unfortunately this was our little guy's first day of 3rd Grade. Note the towels and the bucket... Hoping to try it again tomorrow!Facebook/ Jennifer Howard Bell