
This is actually
an interesting social EXPERIMENT.
The Big Bang Theory Season 9, Episode 8

It's an EXPERIMENT.
The Big Bang Theory Season 1, Episode 4

But you finished your EXPERIMENT
a week ago.
The Big Bang Theory Season 2, Episode 5

I'm conducting
an EXPERIMENT.
The Big Bang Theory Season 5, Episode 4

Wait, you've-you've done
this EXPERIMENT on humans?
The Big Bang Theory Season 7, Episode 5