You make it home to your apartment nearby after spending the entire morning outside in the park. Once inside, you slip off your shoes into your kitchen to get a drink. Standing in your kitchen, you can feel your whole body throbbing, as if you had been jogging the entire morning. You finish your drink and step gingerly into your bedroom, as the throbbing increases, leaving your mind in a fog. You remove all of your clothes and step into the shower, and let slightly warm water cool you down. You breath deeply under the shower head, the throbbing slows down, and your rock hard cock begins to soften from what was a painful erection. Your mind clears, and you turn off the shower. You grab a towel and slowly stammer to your bed and lay down.
You don't notice falling asleep, until you wake up. You start to sit up and feel a tight pain and then a release from your balls as you erupt in orgasm from your throbbing cock. You collapse back onto the bed as you feel throbbing jet after throbbing jet of warm semen spurt forth upon your belly. It feels good, but you feel so full. Your cock continues to throb after you run out of semen, your body still in orgasm. There is no relief until your eyes grow heavy again, and you wake up, now sometime the next day.
Looking around, your too weak to raise your head, so you turn onto your side. You then feel the crusted semen from last night's torrent. You slowly roll off the side of your bed and onto your feet. You stand slowly, as your belly, thighs, and cock are embedded in crusted semen that crumbles slightly with effort as you stand. Stammering, you make your way to the toilet, where you dig your flaccid cock from your crusted groin. You exhale slowly and deeply as you drain into the toilet for the first time in a day. You then get into a hot shower as you feel your strength return from the cleansing soap and water.
Feeling normal again, you turn off the water and step out of the shower. Grabbing a towel, you wipe down once and head into your room. You grab a pair of underwear and towel off your legs and groin when you feel a sensitive spot on your left thigh. You see a brown spot on your inner thigh that is an odd rounded triangular shape. You touch the spot again, and your cock quickly hardens. A few strokes of the spot have you on your knees spurting a fountain of semen into your towel. You gasp as you catch your breath from the sudden change from being normal to in the height of orgasm. You sit on your knees as your orgasm slowly subsides, and stare down at your thigh. The spot is lighter than before. You rub again, and this time it takes a bit more rubbing before your in orgasm. This cycle repeats three more times before the spot is gone, and your thigh is normal again. Your towel is covered in grayish blue semen, and you remember the rock.
You reach over to yesterday's shorts and pull out the stone. The stone was a perfect match for size and shape for the spot on your thigh. You put the stone on your dresser and proceed to clean up. After the first load of bedding is in your clothes washer, you return to your room and stare at the stone.