The joke:
What did one plate whisper to the other plate? Dinner is on me.
It’s a classic pun on the phrase "It's on me."
Meaning 1 (Literal): The food is physically sitting on top of the plate.
Meaning 2 (Idiom): In English, "It's on me" means "I’m paying for it" or "My treat."
The joke is funny pbecause the plate is acting like a big spender, but it's actually just doing its job!