Usher song that's also a texting abbreviation

• "Can you believe this?!" in chat rooms
• Online outburst
• Texter’s expression of surprise
• "ur joking!"
• Amazed initials
• "That's amazing!" to a texter
• "I'm shocked," in a text
• "Holy cow!," online
• "SMH ... I'm shocked"

Wikipedia Word definitions in Wikipedia
OMG may refer to: