Sadly this has to be it for me for the night! but will hang on to the other prompts :D And I finish up with porn, woo:
Very NSFW, so caveat lector!
The first time Harold sets teeth in his throat and tentatively bites down, just hard enough that it’s going to leave a mark, John can’t breathe during, afterwards: it makes his breath stutter and catch and stop in his chest, and he’s half arched up off the sheets, trembling and suspended for one dizzy, unseeing moment; his cock jerks desperately in Harold’s grip.
"Ah," Harold murmurs, licking his tongue soothingly over the bite, "I thought so."
Later, with John’s thighs marked, and his hips, the insides of his elbows, his nipples, every part of his body almost unbearably alive and stinging, Harold’s teeth scrape delicately, carefully, deliberately, along the underside of John’s cock, and John moans in desperation and tries not to move.