"Why didn't you say anything?" - in the quests before SB. There's an option to ask Lyse, but I understand why she did not. I want to know why the Scions didn't =.=
"Uh huh, yeah, sure Lyse, can I go already?" - to about every quest she appears at past maybe 1/3 of SB. I've watched all the cutscenes in the story (a lot of them more than once), but found myself skipping when I saw her speak longer than a sentence or two max. I can't help it, I just find her so annoying ;__;
"You say I've earned my rest, and now want to take me somewhere? Nu uh, be back sometime, I'll rest crafting or something" - to the Temple of the Fist unlock quest (?)
*lots of profanity* - to most of the moogles, except maybe for Kupplo Kopp or whatever his name was
"So you reject my offer to buy this stupid sword, offer to buy it for Scions' cash, and then make me earn all of said cash? Seems legit" - Scions in 4.2

Those are the MSQ ones at the top of my head, will probably find more in the side quests :P