What the hell is this?

[Sa'ar Chasm]

When I was a kid, I always thought it meant "says me" with an extra syllable in the middle, so that Open Sesame essentially means open the door because I said so.

It may just be a nonsense word made to sound foreign, since anyone speaking Arabic is unlikely to say the English word "open".

Hee. I love nutty pseudoscience online.

I'm not sure how seriously the dude takes his book. It might be in the vein of Legends of the Ferengi or the Star Wars atlas, where fictional stuff is presented as "real", but both author and reader know it's fake and accept the premise because they think it's neat (for a sliding definition of "neat").