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

Leonard's lactose INTOLERANT.
He can't eat anything here...
The Big Bang Theory Season 4, Episode 4

- Building on that, I'm lactose INTOLERANT.
- No, I saw the menu, they have soy cheese.
The Big Bang Theory Season 8, Episode 21

that he's not really
lactose INTOLERANT, hmm?
The Big Bang Theory Season 11, Episode 17

- You're lactose INTOLERANT.
- I don't eat it, I think it's a good idea.
The Big Bang Theory Season 1, Episode 1