This is a room in everybody's house where they keep the door closed because this is where they put all their junk that they don't know what else to do with it. So when you open the door the only thing you can say is "Oh My God".
Friend#1:What's behind that door?
Friend#2:Oh that's my OMG room.
Friend#1:Well let's have a look.
Friend#2:OK
Friend#1:Oh My God!
"OMG it's big!" or "OMG it's huge!" (OMG acronym for, Oh My God!) A quote commonly used by females to describe a big penis usually when seen for first time. Though, statistics show most females use the phrase when seeing a big arachnid (like spiders.)
When an individual named Sharon or any other name says somethingkinky but in a hidden way, you use this phrase to expose them and point it out.
-Sharon: Ah I want that (sexual or something dirty)
-Abdul: Omg Sharon you are so kinky.
-Sharon: Haha I indeed am.
• In here it was used to expose the true (kinky meaning).