Rainbow: C'mon, Kaboom, You're doing great! Just a bit higher!

Kaboom: huff huff I...made it, momma. whew

-Kaboom collapses on the cloud-

Rainbow: Great job, kiddo. Now the real fun can start!

Kaboom: C-can't we rest for a second, momma?

Rainbow: Rest? Why? You tired?

Kaboom: N-no. Just thought you might want to.

Rainbow: Aw, that's sweet of you, KB, but I'm good to go!

Kaboom: ...cool...

Rainbow: All right, so I'll tell you what kiddo; you beat your mom to that cloud over there, and you can have an extra piece of pie for dessert tonight. Sound like a deal?

Kaboom: Yeah...sounds good.

Rainbow: All riiiiiiight! On your mark, get set...GO!

-Rainbow speeds off, leaving Kaboom behind on the cloud. He falls back, exhausted-

Kaboom: Oof...

-Rainbow looks back behind her, seeing Kaboom back at the cloud-

Rainbow: What the-?!

-she pulls a u turn and heads back to Kaboom-

Rainbow: Kaboom! What the hay are you doing, kid?!

Kaboom: Oh, uh...sorry momma. Guess I was a little tired.

Rainbow: Huh. Well, I guess we can call it a day for now if you're pooped.

Kaboom: Thank Celestia...

Rainbow: Tomorrow we can race!

Kaboom: ...

Rainbow: Well come on, slow poke! Home's not getting any closer.

Kaboom: Coming, momma...

===

Shorter one this time around. Might submit one more later today. If not it'll be later in the week.

When he was still a colt, Kaboom pretended to be into flying. He didn't want to make Rainbow look "uncool" for not having a sporty kid. But shortly after this he told her the truth, and their relationship became more distant.

He's around 5 here.