[Challenge/normal?] Locked out

I was bored. So I made a level. It isn't very good, but it has a secret. This level is really short, the environments aren't all that great... I'm not selling this too well an I? I would call it easy, but it's probably normal. Have fun. Or maybe not. The story is that Juni locked herself out of the house while her mom was taking a nap. Did I metion this level is based (loosely) on a true story? Kudos to you if you can find the secret and get the reference in it.
http://www.knyttlevels.com/levels/Dandelion%20-%20Locked%20out%20LAST%20FIX%20%28I%20hope%29.knytt.bin

Um... I go to the left, and there's a two-block jump. No climb powerup, and no other apparent way to go. I'm probably badly missing something here

*Facepalm* Forgot to set the powers at the start. I guess we all miss things like that once in awhile. Fixed it.

i thought it looked pretty good. i played the one before you fixed it...
anyways, its not bad

*Double facepalm* I really should test my levels. Fixed again. Sorry.

It was a good level

It was a good level

Thanks. Why was it good?

Lol I get it I think!

Lol I get it I think!

Spoiler: The secret that is (click to show/hide)

Phineas and Ferb?

Yes!

Beat it! Pretty easy. It had some good scenery though. Also found a void, up-left from here: