...you may be alone
because your PSYCHOLOGICAL state...
The Big Bang Theory Season 4, Episode 5
He's using PSYCHOLOGICAL warfare.
We must reply in kind.
The Big Bang Theory Season 1, Episode 13
One is a deep-seated
PSYCHOLOGICAL disturbance,
The Big Bang Theory Season 12, Episode 8
Trust me, Kripke will fall easy prey
to my PSYCHOLOGICAL warfare. Observe.
The Big Bang Theory Season 2, Episode 12
Yeah, she's right. For every Newton
who had a PSYCHOLOGICAL issue,
The Big Bang Theory Season 9, Episode 10