
I'm lactose INTOLERANT.
The Big Bang Theory Season 3, Episode 13

- Right. No. I'm lactose INTOLERANT.
- Right.
The Big Bang Theory Season 2, Episode 1

- Here. Have some pizza, sweetie.
- Penny, you know I'm lactose INTOLERANT.
The Big Bang Theory Season 3, Episode 6

You know I can't eat butter.
I'm lactose INTOLERANT.
The Big Bang Theory Season 2, Episode 23

He can't eat cheesecake.
He's lactose INTOLERANT.
The Big Bang Theory Season 1, Episode 16