
Way ahead of you. That's an
I Can't Believe It's Not Butter! stick.
The Big Bang Theory Season 2, Episode 23

BUTTER is an excellent lubricant
for your rectal exam.
The Big Bang Theory Season 5, Episode 17

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

It's okay. Now, I don't need BUTTER.
The Big Bang Theory Season 10, Episode 20

It's like
the peanut BUTTER cup of the mind.
The Big Bang Theory Season 10, Episode 19