He can't eat cheesecake.
He's lactose INTOLERANT.
The Big Bang Theory Season 1, Episode 16
- Building on that, I'm lactose INTOLERANT.
- No, I saw the menu, they have soy cheese.
The Big Bang Theory Season 8, Episode 21
I'm lactose INTOLERANT.
The Big Bang Theory Season 3, Episode 13
You know I can't eat butter.
I'm lactose INTOLERANT.
The Big Bang Theory Season 2, Episode 23
that he's not really
lactose INTOLERANT, hmm?
The Big Bang Theory Season 11, Episode 17