
At that point, BASED on the geography of
the apartment and the speed of Sheldon...
The Big Bang Theory Season 1, Episode 11

I have a conclusion
BASED on an observation.
The Big Bang Theory Season 1, Episode 10

...and BASED on living next to you
for three years...
The Big Bang Theory Season 4, Episode 1

And that's BASED
on the inherent credit-worthiness...
The Big Bang Theory Season 2, Episode 14

- That's so silly.
- It's actually BASED on very sound theories.
The Big Bang Theory Season 1, Episode 16