Operation "This Will Most Likely End Badly" is a go.

Tell me to stop and I'll stop. [ And then he slips his fingers into John's hole, massaging it into the walls of his rectum. The buzz is hitting Poe too, making him breathe quicker, making him feel every point of contact in a steady almost vibratory hum.

There's no way John can miss Poe getting hard against his ass. Into John's ear: ]

Because if you don't tell me to stop, really tell me to stop? I'm going to fuck you blind, John.