YOU'RE MOM.
they are preparing for whats coming afterwards
What son *Dad cries with joy
You get a hand full of sheet. (Joke from my mom)
We're both constantly penetrating your mom
The baby grows up and learns to stop crying.
Yuri Googoogagarin. I'll see myself out...
3, duh. (My ex's 9 year old little sister told me this joke, and followed is up with: "and YOU'RE the math guy!" >< Burned.)