Golden Sun/Funny

Golden Sun: The Broken Seal
"...There's a silk negligee.
 * Mia, who up to this point has been built up as the stereotypical White Magician Girl, snarking at Babi in Altmiller Cave out of nowhere.
 * Isaac peered into the wardrobe in Lady McCoy's room...

Isaac! Put that back!"

"Meditating guy's thoughts: "... ... ... I sense impure thoughts from the man next to me!" Other Meditating guy's thoughts: "... ... ... I am hungry.""
 * At Kandorean Temple, if you mind read two monks meditating, the following ensues.

"I know it's a rock, stupid! (implying that was what Isaac thought)"
 * Garet in the Altin mines, if you neglected to pick up the Force orb.
 * Using the Psynergy "Force" on the wall in the Altin mines. Even better, the only reason you do it is probably that there's a sign saying "Danger! Do Not Touch The Wall!". Should you reach Altin mines without obtaining Force, Garet will kick the wall and cause the boulder to fall down.
 * Tell Garet you know what the Wise One is in the first game.

Golden Sun: The Lost Age
"Felix peeked into the wardrobe... What in-!!! What's with all the wardrobes? Where are all the baths?"
 * When the party leaves Lemuria for the Great Western Sea, Sheba asks Piers how old he is (she feels they haven't given him the proper respect for his age since he is really freaking old), but he declines to answer, feeling it is not important. Jenna joins Sheba in the pestering of the question and teases Piers, causing him to beg Felix to get the girls to stop pestering him. Felix's reply? "...."
 * Speaking of wardrobes:

"Kraden: "What!? Are you INSANE!? Or maybe you think you're funny? Because you're not! Maybe this whole quest is just a game to you, but it's not to me! Are you bored!? Do you want to go home!? FINE! That's it! Then let's go home!""
 * A well-hidden Easter Egg: if Felix keeps saying no in the game's various yes/no choices, or just generally disagrees with Kraden for most of the game, when they reach, Felix would be ill-advised to say no yet again...

"Jenna: Can't you stop talking about yourself for one second, Alex?"
 * When Jenna delivers this priceless line:

"Briggs: Neener neener neener! Neener neener neener! Neener neener... bleah!"
 * Say it with me, kids!