He's an EXPERIMENTAL physicist.
The Big Bang Theory Season 6, Episode 5
Prescription, nonprescription, foreign,
domestic, EXPERIMENTAL.
The Big Bang Theory Season 3, Episode 15
And they're all hopped up
on EXPERIMENTAL steroids.
The Big Bang Theory Season 2, Episode 16
Oh, you heard me.
Your EXPERIMENTAL bonafides are laughable.
The Big Bang Theory Season 10, Episode 4
Um, I am what's called
an EXPERIMENTAL physicist.
The Big Bang Theory Season 6, Episode 18