Hypertrophic pyloric stenosis is such a down home diagnosis. You bring your baby home and then their weight goes down. Also the ultrasound measurements are a muscle wall  greater than 3mm thick and a channel length greater than 14mm. 3 and 14 – 3.14, pi. Get it? Did you read this far?

Lyrics

[verse] Across the room
The vomit goes
It’s on the wall
And my clothes
Have a slice of pie – it’s on the menu
Projectile emesis – does that offend you?
More Firstborn males for some reason
Pal-pa-bull olives? They’re in season

[chorus] Hypertrophic Pyloric Stenosis
Nothings getting through!
An Ultrasound will diagnose
A Pyloromyotomy we will do!