Now, if you assume 15 tampons per CYCLE
in a 28-day CYCLE...
The Big Bang Theory Season 1, Episode 4
Where are you in your menstrual CYCLE?
The Big Bang Theory Season 2, Episode 9
Four is still releasing the fabric softener
too early in the CYCLE.
The Big Bang Theory Season 2, Episode 1
I clearly woke you up
in the middle of a REM CYCLE.
The Big Bang Theory Season 1, Episode 10
You know, like women,
men have a monthly hormone CYCLE.
The Big Bang Theory Season 9, Episode 21