A few weeks ago, I was trying to think up some new story lines for this, and GrammarDemon mentioned something like this, so … enjoy. And I'm being a dork and dedicating it to GrammarDemon!
'Sammy, are you done yet?'
'Almost.'
'You said that ten minutes ago. You were the one saying you could fix it, you could fix it. We'd be on the road by now if you just listened to me-'
'And you won't shut up, and it ruins my concentration, and then I can't work the jack.'
'I'm not letting you even change the oil from now on-HEY! Careful! Baby needs a tender touch.'
'Dean, if you gave any woman the attention that you give this car, you'd be married by now.'
'Married? I'd rather blow my brains out. I'm happy just breezing through town, leaving a trail of broken hearts.'
'You're such a girl.'
'Are you fixing it or what?'
'Look, I changed the tyre already, I just can't get the bolts back on when I have to look at you and talk to you because you're too scared to be in your head for five seconds at a time.'
'I can be on my own.'
'Sure, Dean.'
'Oh, I can. It's you I worry about. I mean, without me you drink demon blood, you hang out with demons, you collect dogs-'
'I get it, I get it. It's … just … about … done!'
'Well, happy birthday, Francis! Can you lower the jack now?