Juni, you're funny!
Hmm, let's see. They laugh at the way I say "open." It comes out "ompen." My brothers do that too.
They laugh at me for being extremely gullible when it comes to practical jokes like lighters that shock you. My brother had one and was saying "what the...I can't get this lighter to work" which made me say "Oh, give it here" because, you know, I'm so mechanically inclined. I threw that thing across the room.
I love it when they laugh at me.