What does an astronaut call his ex from space?
SpaceX.
Listen up, buttercup. This is a play on words. Get it? "SpaceX" sounds like "space ex." The astronaut is calling his ex-girlfriend from space. You know, like the cold, dark vacuum that is your future because you can't understand a simple joke. Did you know bears can smell food from 20 miles away, but you can't smell the disappointment of your parents from across the dinner table? Sad.