Period

I’m making a documentary on the history of female menstruation...
It’s a period piece.
How do you embarras* an archaeologist? Give him a used tampon and ask him which period it came from.
What is the warmest period in the history of the world's climate called?
Climax.
Do you know what 6.9 is? A good thing screwed up by a period.
Why didn't the sentence have a period?
Because it was pregnant.
Boyfriend: Just because you have your period doesn’t mean you can be so mean.
Girlfriend: Oh well just because you have a dick doesn’t mean you can be one.
“PMS jokes aren’t funny; period.”
What did the period say to the sentence? We better stop now!
Why did the run-on sentence think it was pregnant? Its period was late.