
I clearly woke you up
in the middle of a REM CYCLE.
The Big Bang Theory Season 1, Episode 10

is just ensure that we're
gonna repeat the CYCLE.
Breaking Bad Season 4, Episode 7

Well, maybe my male CYCLE
synced up with Raj's actual period.
The Big Bang Theory Season 9, Episode 21

Where are you in your menstrual CYCLE?
The Big Bang Theory Season 2, Episode 9

Now, if you assume 15 tampons per CYCLE
in a 28-day CYCLE...
The Big Bang Theory Season 1, Episode 4