That's it!!

[Sekkei]

Like seeing someone's YouTube video and he suddenly yells it out while everyone is dying left and right to a pack of monsters? Pretty sure he was not faring well either, so that sudden enthusiasm while he's choking on a lung is pretty impressive :x

[Atoli]

In terms of inapproriate timing, this one wins (it's an edit though).
Careful, big spoilers inside.

[Malzian]

I don't care unless it's the perfect blend of meat, egg and shrimp. >.>

[Averax]

Me: *picks up random object on the ground while also fighting a multitude of beasts.*
Ignis: "akdhauwhdkasdasd"