Let's say for a moment that
I accept the bath-item-gift HYPOTHESIS.
The Big Bang Theory Season 2, Episode 11
This guy's working
from a HYPOTHESIS where...
The Big Bang Theory Season 4, Episode 3
You have a backup HYPOTHESIS?
The Big Bang Theory Season 1, Episode 6
I finally have time to test my HYPOTHESIS
about the separation of water molecules...
The Big Bang Theory Season 1, Episode 4