When Jack eyes John and then asks him if he likes fishing, John stuffs his hands in his pockets and says, "sure, I've done some here and there." There's a joke here about the nine inch one that got away and he could make any number of double entendres about lures, but he bites them all back; maybe the General really does want to fish, although John would be surprised. He's seen that look before and knows what it means.
Jack rents a car when they reach the last leg of their journey and John lets him drive. He has vivid memories of the day he first met Jack and while John's gotten used to Ancient tech and drone weapons, he still hates backseat drivers.
The trip to the cabin is quiet except for the radio. John tells himself that he enjoys the silence, and is a little surprised to find that it's true. He leans back in his seat and lets some of the tension he seems to carry all the time these days ease just a little. Jack glances over at him now and again, but never says anything and John wonders if the silence is kinda weird for him too.
When they unload the car, John notices that Jack brought a tackle box along with his duffel bag and John can see that it's full of lures and other fishing gear. In addition to changes of clothes, John brought a couple boxes of condoms and the large-sized bottle of Eros Bodyglide.