Mike in therapy with Queeks, stating that she's been wearing the same pair of shoes since she came to the island (and they're smelly enough to prove it).
Queeks: ACK!!! YOU KEEP YOURS ON!!!
The whole episode, really.
From "Whole Lotta Shakin'"
Mike worrying about the volcano erupting, admitting that she never saw a PG movie.
Followed shortly soon after by a Big "WHAT?!" when Lu tells her that the volcano's activity is a time for celebration rather than fear.
In "Thanks, But No Thanks", Margery is cooking something that requires her wearing a welding helmet and eventually a radiation protection suit. Talk about Lethal Chef.
From "A Boy's Game":
"WHO'S DA GIRL! WHO'S DA GIIIIIRL!!!"
While playing his extremely difficult handheld game, Og states he was so close. The camera pans out to reveal that he's on the edge of a cliff, during which Og finishes his sentence by specifying that he was close to falling onto some jagged rocks.
In "The Three Amigas", Lu sees the newly-befriended Mike and Hermione wearing "nose bones". Lu shows up with a bone through her nose too in order to fit in. However, Mike and Hermione reveal that their bones are actually clip-ons. Lu on the other hand...
Lu: Does it hurt?
In "The Great Snipe Hunt", Margery is cooking a "pea cake" for Og's birthday. Mike questions that it should be a carrot cake. Margery's response?
In "A Learning Experience", Mike gets ready for her first day of school on the island.
Alfred: Are you ready for school, Mike? Mike: Yep. I've got pencils, a backpack, and a new protractor. Alfred: That's nice, dear. But, are you ready for school?
That joke then makes sense about a minute later, when we find out what exactly is school there.
Plus, when Og points out a "school crossing" on their way to school, Mike scoffs at the idea, saying there's nothing to watch out for. Once she steps onto the crossing, a stampede of elephants rushes by.
Mike:Safety first. (pan down to reveal her foot sticking out of her torn shoe)