Grape Sense of Humor
This one is amusing despite being rather obscure. This person is texting, and as a warning, they are sending out a random image of grapes with no reason. The explanation could come from the book The Grapes of Wrath, which suggests that God’s dreadful wrath and destruction are the juice of wrong deeds, with grapes serving as the symbol.
Yes, it’s a niche market, but for those who enjoy the book and the allegory, it works quite well.