It's pretty simple: One person sets up a joke and the poster after them posts a punchline that they make up.
Rules

1. All PC rules apply.
2. All jokes must be in the form of a question like "Why did the Torchic cross the road?"
3. All jokes must be Pokemon related.
4. The set-up may be something that you've heard before or something that you make up on the spot; however, the punchline must be created by you.
5. Try to let the punchline and the set-up make sense.

Example
Poster 1: What did the Metapod say when he tripped over the Geodude and hit the ground?
Poster 2: "Man, that was hard." How do Wailord float?

Got it? Good. The poster below me can start us off by making the first joke.

What did plusle say to Minun when it was time to eatt?

Aww, thank you! Let's hug and recharge ourselves.
(aka eating for them)

What did Wailord and Skitty do when they were both at the daycare?