Welcome, astro-physicists! Today's topic: Black Holes are like the Universe's version of a timeshare in Florida - everyone's got one, but nobody really understands it.
John: I just calculated that a black hole with a mass of 10^10 kg has a radius of approximately 10^-15 meters.
Jane: That's cute, John. I've got a black hole with an event horizon that's bigger than my social anxiety about asking for help.
Bob: Has anyone here considered the possibility that black holes might be just giant cosmic hamster balls?