This isn't the REACTION
I expected
The Big Bang Theory Season 5, Episode 5
in which I looked up
the REACTION rates
The Big Bang Theory Season 7, Episode 6
Leonard, what if you have
an allergic REACTION...
The Big Bang Theory Season 8, Episode 9
For every action,
you have a gigantic and annoying REACTION.
The Big Bang Theory Season 10, Episode 18
Still no REACTION.
The Big Bang Theory Season 7, Episode 5