What do you say that no one else 'gets'?

Ohhhh it’s so hot, it’s so hot, it’s so hoooooot.

Do you realize the street value of this mountain?

One that I usually mutter but that no one ever gets:

“John Wayne was a fag.”

As a junior high teacher, I’d have to say some days it’s everything!

I’ve always understood “blow off” in the sense your friend meant, in other words to ignore something or to forget. It’s never caused me any confusion when someone says it, nor have I ever confused anybody when I used it. It seemed universal to me, no matter what part of the country I’ve been in.

I say!