
we don't churn our own BUTTER,
The Big Bang Theory Season 5, Episode 18

That's strange,
since peanut BUTTER
The Big Bang Theory Season 7, Episode 4

He wants BUTTER!
The Big Bang Theory Season 5, Episode 3

so the school nurse had to use
peanut BUTTER to get it out?
The Big Bang Theory Season 5, Episode 11

Is there any BUTTER?
The Big Bang Theory Season 5, Episode 3