Flag 128, when Keima is writing Shiori's story with her (in which his character, Cashiragi, gets killed off as a result of Shiori's anger with him), and she forces Cashiragi to get eaten whole by a wild Rembatos Beast. The rest of the story?
Keima: "Cashiragi wasn't digested and escaped from the poop! Truly, it was a miracle!"
The final episode of the anime's first season. How can Keima's 'Capturing God' moment be made funnier? By making that scene a Theme Music Power-Up.
And then he's off to frolic with girls, singing hilariously off-key.
The final episode of the anime's second season. War of Keima clones is even funnier. And then they turn into adorable midgets.
Shiori catching Keima wearing a girl's uniform and gloating about being the 'God of getting captured' as part of his re-capture of Yui in chapter 141.
Keima is able to delay Luna/Vulcan just by reminding her to clean up the library!
After wrapping things up with Yui and Mars, Keima tells Haqua that they still need to keep their guard up. Immediately after saying that, he walks into a giant fish that tries to eat his head.
The little argument in 158 between Vulcan, Diana, Minerva, and Mars over who Keima belongs to. He was not amused, but the readers and Elsie were.
The first few pages of chapter 168 are an hilarious exchange between Keima, Diana and Tenri while Keima's in the bath.
In the same chapter, the magic ear. It just comes out of nowhere.
The side-story "Once Upon A Time In Maijima" is a slapstick western with Shiori as the heroine, Kodama as the villain, and all the other capture targets as various characters in the town. So what role did Keima play? He's Shiori's horse.
As if chapter 179 weren't amusing enough due to Keima's secret weapon for capturing Ayumi (her panties), it's made absolutely hilarious because due to Vintage targeting all of his previous conquests Chihiro is dragged along for the ride the whole time, with absolutely no idea what's going on.
The entirety of chapter 183. Ayumi thinks escalating things will make Keima give up. It doesn't work. She demands he marry her to prove his love. He accepts. She takes him to meet her parents (note that this is almost the middle of the night), and he tells them he took their daughter's first time. While fleeing Ayumi's raging father, he drags Ayumi up to the roof pulls out a wedding dress, and officially proposes.
