Here's a dollar and twenty-five little cents

That means, here's a dollar and two dimes and a nickel, instead of just a quarter.

You are a meany-pants buttons-swiper

I stole the remote control and was tickling her or something. As I was typing this entry, she didn't remember what I did, but said, "I don't know, but you were very mean...pants-y."

You want to be in the righter left lane

That is, the rightmost left-turn lane

It's brrr-sies in the cold

Means, "it's cold in the shade". "Brrr" means cold, and if it's really cold, that's "brrr-sies". Apparently "cold" means "shade".

The Spurs play the Nickers...

Spurs play the Lakers. I can only assume the next word was "lext".

Your tummy. Your outside tummy. Your side outside tummy.

Describing where there was a piece of dryer sheet on my shirt near my hip.