His curious expression turns into instant understanding once Poe starts working on his cock. "Oh!" The practical applications click into place even as Poe gives a practical demonstraton with how smoothly his hands move up and down, and Finn breaks into a big grin that isn't solely due to the physical sensation.

"I got it," he pants, and he pulls Poe down onto the bed with him. Some jostling around speckled with kissing and stroking drives home that his original plan would in fact be bad for his back. "Here, you come over to the edge and I'll stand for this part." Because he wants to keep watch on Poe's expression for this, wants to make sure he's doing it right and that Poe gets just as much out of it as he does.

Borrowing the lube, he'll start applying it to Poe carefully.