You put a piece of wire in her and if you feel pulling she is indeed pregnant.
You take it to the Moo-seum. I know this joke is terrible, but I totally came up with it on my own, but I'm sure it exists already.
I don't really know, but it sounds a little crazy
Because the Doctor can never see him.
They're wearing a SOMBERERO
Because he saw the snowblower coming
Because they all pull out.
Miracle whip.
This is my body, I'm nice with jam."
My wireless internet." (New Yorker cartoon ideas)