A Romulan battle BAGEL?
The Big Bang Theory Season 4, Episode 9
Uh, Raj. Bagel down.
The Big Bang Theory Season 12, Episode 23
I did have a poppy-seed BAGEL
for breakfast...
The Big Bang Theory Season 1, Episode 5
you cut a BAGEL with your keys.
The Big Bang Theory Season 7, Episode 10
You can't find a BAGEL in Mumbai
to save your life.
The Big Bang Theory Season 1, Episode 4