Take a ping pong ball, cut a hole on one side and then another on the other side, soften it with heat and manipulate enough and you'll have a drinking straw.
Plus two small discs you can show to passing theoretical topologists to prove you made two real-world holes.
Take a ping pong ball, cut a hole on one side and then another on the other side, soften it with heat and manipulate enough and you'll have a drinking straw.
Plus two small discs you can show to passing theoretical topologists to prove you made two real-world holes.