
You went to President Seibert's house
in the middle of the night?
The Big Bang Theory Season 2, Episode 23

Hey, guys, guys, President
Siebert is headed this way.
The Big Bang Theory Season 5, Episode 16

President Seibert, I don't
know why you're yelling.
The Big Bang Theory Season 7, Episode 10

President Siebert?
The Big Bang Theory Season 5, Episode 17

Oh, my. President Siebert,
I don't mean to be an alarmist,
The Big Bang Theory Season 5, Episode 17