I told my girlfriend that the world is flat.
She said, "but the world is round."
I said, babe, you are my world.
Flat Earth Sweet Talk
Categories
Explanation
Experiment
The joke plays on the literal meaning of the earth being flat, but then shifts to the romantic meaning that the girlfriend is the speaker's entire world. It's a sweet and cheesy way to express affection, using the flat-earth idea as a setup for a loving line.