Date with a Fetus

Tonight I have a date with a fetus
The end of the second trimester is our anniversary
I'm putting on my new belt and [?] behind my ears
'Cause tonight I have a date with a fetus

Give me a saucy little fetus any old time
I'm picking her up at a quarter to nine
I'll enjoy filet and [?] a light chardonnay
But my date will have umbilical tonight

[?]
So that your fetus won't protest as I playfully pinch her gams
I'd ask for her hand [?] but the fingers aren't fully formed
I'd date it postnatal, but it'd be too old by the time it was born
A date with a fetus