You comment that you do like his style of comedy, but that you are a bit too used to Dad Jokes to really get a good reaction out of. You then ask the Wainwright why six was afraid of seven. He claims not to know, and you finish the joke.

"Oh ho ho ho!" The older man says with mirthful laughter. "That is a good one! Seven eight nine... I'll have to try it on the Clockmaker when I see him next."

Getting an idea, you tell him that there is only one way to really appreciate a Dad Joke. You then call for Tamako, who looks up from examining tools on the nearby workbench and looks up at you expectantly.

You ask your daughter why melons have weddings.

"Huh? Melons get married?" she asks confused. "Why?"

You tell her they cantaloupe.

"What? Canta- Oh! Oh my god." Tamako says rolling her eyes with a sigh.

You tell Tamako that you have a ton of them. A whole Dadda-base full.

"Stooop!" Tamako says groaning.

"パンダの好きな食べ物は何ですか?パンだ!" Kamiko exclaims.

"Not you, too!" Tamako says in frustration.

"Sorry, honey." Kamiko says giggling.

"Oh! I just thought of a good one!" The Wainwright says, "What did the wagon say to the horse on their first date? I coudln't help but be drawn by you!"

'Why did the wagon start a fight with it's wheel? It had a lot of "axle" to grind', you add.

"What do you call a wagon full of women? A miscarr-" Hilde starts, but Kamiko clamps a firm hand on her head, which silences the robot.

"My goodness, did that dog just talk? Not just comedy, but ventriloquism!" The Wainwright says, still wiping tears from his face from laughter.

If this fellow is laughing from just that perhaps a pun might make the princess laugh. You got a good one about crows and attempted murder locked in just in case.