Don't forget all of those interruptions when the guys try going to the bathroom!
Whenever Manta and Faust hang out together, they're exact opposites in oh so many ways. The circumstances between Manta and Faust on the other hand, you would be scared too if you were being dissected alive.
There's this one blink-and-you'll-miss-it scene in Episode 18. When Mikihisa tried waking Ryo after he'd been knocked out by Tammy.
Ryo:(still in a stupor) "BE MY LADY!"
Mikihisa:(totally deadpan) "Ryo... release my leg."
I loved it in "One, Two, Three, Draw" when Len got mad at Yoh and poked him with his HAIR!
Let's play tip the Lenny!
All the gags involving Billy, Rio's truck driving friend.
Morty and Opacho: "Stop following us!" "No." "Stop following us!" "No!"
The English dub had Joco in one part of episode 41. When Anna got Len pissed off after she mocked him about hiding his emotions about June.
Anna: "I hope you're not in the market Len, because the whole I don't show my emotions thing, it has no appeal to a girl."
Len:(pissed off) "NO APPEAL?"
Joco:(while holding up a banana peel) "NO A PEEL!!!" (Cue everyone turning white and Len repeatedly attacking Joco with Rapid Tempos).
Joco using his comedy routine to put an end to Nyorai and "Team Dairedo" by having Mic use his Giant Over Soul and... dance. It's so funny in fact that it actually gets the revenge obsessed Nichrom to laugh (if only for a while).
By the end of the episode "Spirit Busters" every ghost that Fudo imprisoned has been freed, and Morty has become a shaman, but nobody knows where Mosuke run off too. So they all assume that he crossed over safe and sound. Mosuke however would disagree.
Amidamaru: "I'm sure he's happily floating in the great spirit stream."
Mosuke: "I'm in the laptop! Guys! Will somebody please, hit the escape key!"
After Len gets better and saves Lyserg, he actually THANKS everyone for their help!
Faust: "MAYBE I PUT HIM BACK TOGETHER WRONG!"
After driving to Mesa Verdede in search of the Patch Tribe, only to find that it's full of tourists, Yoh and company promptly Face Faultan entire van.
Ryu's ever-changing hairdo.
When Yoh and company face off against Dracula (who's a blond Bishōnen), they complain about having to fight a fictional character, and that one guy in his group (a black-haired man with a long mustache and hair horns) looks way more like Dracula than he does. Dracula suffers a brief Villainous BSOD from this, before killing said teammate and drinking his blood.
Hao threatens to reveal the name of the girl Horohoro loves has to count as this, after reaffirming that he can read minds.
Made even funnier when Hao reveals later on that his mind-reading powers don't work that way.
Chocolove gets one on the international level and that's epic considering how jokes are lost in translation. In one scene from the anime:
Ren: "Anna!" Chocolove: "Banana!!"
Every time that Ryu reacts to something cute you can't help but to laugh considering it's amazing how many sexual orientations he has.
In the second half of the series, Ren's spiky grows every time he is mad to the point it surpasses Faust and Ryu's height. Even Bason and Hana are surprised due to how long it becomes.
After Len's first appearance, the dub actually worked Never Say "Die" into a pretty funny joke.
Morty: "Shouldn't you be training or something? I think this guy wants to take you out!"