You know what to do, write down things which would be most unlikely for a character in this game to say. Now go! I'll start first...
Vaan : 'Penelo, look, I got a big one!'
Penelo : (looks) 'Gee-Whizz, Vaan, is this your first big one?'
Vaan : *blushes* 'Yahh'
Basch : 'Uhhh-hmmm...that is one big beast you got there, boy, I hope my next one's as big as that!'
Balthier : 'Oh, please, my penis was bigger than that at twelve...'
EVERYONE FROWNS AT BALTHIER
Penelo : 'We were actually talking about that fiend, Vaan killed...'