Episode 20: When Garnet is describing how bad Minami's boyfriend is that Sapphie assist on registering the new terms through signs.
Also in episode 20, Garnet herself used her magic and instantly changed Minami's clothing into a sexy bikini to impress Miyamotto. Hilarity ensues.
Episode 23, at the beginning of the episode Ruby accidentally wet the bed where she and her Jeweller is sleeping. Eventually Ruby is blamed for everything. It got worse when Ruby tells everyone to class that Rinko did it.
The whole New Year's episode. Gaze to be amazed.
The ending of episode 10 when the students manage to use magic (When all magic is disabled) out of shear rage
In one episode, Moldavite buys these two small girls which function as his conscience and help him weigh his options. After many mishaps, the two girls demand to know which one is cutest and this debate ends up involving the entire population of Jewel Land, coming into a tie. So, they demand Moldavite's answer to untie the debate. His answer? JOLLY AND MERRY!!!
Sulfur's mother squashing him with a fly-swatter... So random and came out of nowhere.
Marianne's wedding dress in episode 16. It's almost a Christmas tree, seriously.
In the aforementioned New Year's Episode, Peridot's gone hopelessly bonkers after thinking too much about her punishment she's getting. And that if she failed on watching over Rald.
In episode 49, Kanon, Kaede and Komachi are forced to dance in flashy clothes to 80's music.
The fact that Jewelina Made the Jewelpets so she can have someone to Go Go Dance with. I repeat. The Local Equivalent of GOD, Created Life. Just so she can have someone to have a dance party with.
Episode 40, the entire New Year's episode is impressively campy but yet funny as it sounds. Until it was all a dream.
One scene in Episode 9 where Ruby always get stuck on the ceiling or a big branch of a tree thanks to her ears.
Episode 11. OH GOD, did they just pull a Sunshine on us with Sanada racing against a live action boar? Also in the same episode is regarding about Ruby's utter obsession regarding on seeing a mole's butt.
Episode 25 got Sapphie pulled a serious Bishonnen face, mixed with serious Les Yay to Ruby during their play practice.