SOSG

It means "Someone over Shoulder Gone". It is used when someone watching you is gone. A word used after SOS.

Joel: "OMFG! That one is hot!"
Eric: "WTF! what the hell!"
Lisa: "This one is going to be hot..."
Eric: "SOS! Oh Lisa.. for a while.."
Lisa: "Ow! One hot break!"
Joel: "Haha! This is so spicy."
Eric: "SOSG! Take mo look at it Lisa."
Lisa: "Okay :))"