be in orbit

1. To be circumnavigating a planet or other celestial body. The planets are in orbit around the sun, right? Once the satellite is in orbit, it will be able to provide precise topographical data in real time. Yes, the International Space Station is in orbit around planet Earth.

2. To be extremely happy. Penny's been in orbit since getting engaged last week. I don't think she's stopped smiling once! Of course the kids are in orbit—as of noon today, they're out of school for the summer. When I saw my favorite band perform live, I was in orbit from beginning to end.

3. slang To be intoxicated from drugs or alcohol. Do you remember last night at the bar at all? You were really in orbit! Well, I must have been in orbit if I got up and did karaoke at the bar last night! Help him get home, will ya? He started drinking whiskey, and now he's in orbit.