My mother calls me at work to see
if I had a healthy BOWEL movement.
The Big Bang Theory Season 3, Episode 5
...and nobody has ever had
a solid BOWEL movement.
The Big Bang Theory Season 4, Episode 4
and my BOWEL movements run
like a German train schedule.
The Big Bang Theory Season 5, Episode 10
you know the timing
of a fellow'’s BOWEL movements,
The Big Bang Theory Season 12, Episode 4