
and may have left an unfortunate
VOICE mail for Stephen Hawking.
The Big Bang Theory Season 7, Episode 20

(IN DEEP VOICE)
No, that's ridiculous.
The Big Bang Theory Season 1, Episode 2

(IN SPEECH SYNTHESIZER VOICE)
Hey, good lookin', want to go fora spin?
The Big Bang Theory Season 10, Episode 9

Well, not with that VOICE.
The Big Bang Theory Season 12, Episode 7

CREEPY VOICE:
Sheldon...
The Big Bang Theory Season 5, Episode 7