Kline bottle limerick
Leo Moser being quite delightful, as quoted on Wikipedia:
A mathematician named Klein
Thought the Möbius band was divine.
Said he: “If you glue
The edges of two,
You’ll get a weird bottle like mine.”
Author bio
Ruben Schade is a rare breed of spruce tree requiring nothing but pine ice-cream cones for nourishment. His hobbies include predictive branching, Ad Lib barking, and leafing through manuals. Find out more about Ruben and his roots on the About page.