Jack was in slight distress over the fight in his lap, not entirely sure to do as he was one to get in such tiffs himself. Hey, he didn't want to share sometimes. He was impressed by Greg's handling of it and he laughed at the comment about cars.
"I'm sure you'll figure it out, dear, clever as you are. I have problem seeing you not being in control of any situation, really," Jack meant that, though he was laughing over the offered flask. Taking a moment to think about it, he reached over to take it, having a sip and shuddering a little before handing it back, coughing a bit, "Lovely."