This could be just in Hollywood but I have a feeling it's universal.
  1. I'm gonna go get a drink!
  2. I'm so tired. I think we're gonna go soon!
    You always end up seeing this person 2 hours later. They haven't left.
  3. I'm gonna go dance!
  4. Oh! I need to go find my husband/wife/boyfriend/girlfriend!
  5. I have to go pee!
  6. Are those in and out burgers?? I'm gonna go get one!
  7. I'm gonna go dance!
    This happened to me twice by the same person a few weeks ago. Both times, I saw her talking to someone else not too long after. And not dancing. :/
  8. I'm gonna go smoke!