Samantha Cristoforetti is an Italian astronaut currently on board the International Space Station. She recently made headlines for cosplaying as Star Trek's Captain Kathryn Janeway while there. Later, she donned the same uniform and drank espresso while quoting the coffee-loving Janeway.
But you never actually drink coffee-you just hold it for a while. Cristoferetti made her way to the ISS toilet and explained to viewers how it works. You'd never guess that it's a toilet from just looking at it. Both excretory functions are handled by suction tubes. There's not actual seat. Astronauts just float in the very low gravity and rely on the suction tubes to do their jobs.