
but I'm not going to ruin her BIRTHDAY.
The Big Bang Theory Season 10, Episode 11

- Remind me, what's your BIRTHDAY?
- October 6th.
The Big Bang Theory Season 4, Episode 18

Inside it said, "Happy BIRTHDAY, Howard.
I love you. Dad."
The Big Bang Theory Season 6, Episode 19

Aw, remember when they only
did it on her BIRTHDAY?
The Big Bang Theory Season 12, Episode 13

Well, your BIRTHDAY is coming up
and you've never let us celebrate it,
The Big Bang Theory Season 9, Episode 17