I've seen several memes, and the last one you provided just says "the" with an image of a blue, somewhat blob-like character with a very wide, grid-like smile.
This meme format is often used for "anticlimactic" or "absurdist" humor where the setup implies something is coming, and then "the" is the only word, leaving the viewer to interpret or simply find humor in the lack of a traditional punchline. It plays on internet humor's tendency towards deconstruction and surrealism.
Caption this Meme
