
Enjoy the wedding. Goodbye.
The Big Bang Theory Season 1, Episode 15

This is my door.
Please close it behind you, GOODBYE.
The Big Bang Theory Season 1, Episode 12

- All right. Goodbye.
- No, wait.
The Big Bang Theory Season 2, Episode 8

All right, GOODBYE.
The Big Bang Theory Season 2, Episode 13

Good-bye.
The Big Bang Theory Season 11, Episode 17