As you feel the grip on your dick release, you go to pull out, but something makes you decide not to. You feel a stir in your cock as it begins to re-harden. You feel your balls filling with cum once again, and your cock fills the hole again. The voice replies, "Time for round two." He returns to your cock, beginning to pleasure it once again. The pleasure you felt last time is now ten times more pleasurable. You feel like bursting another load, but he lets go just as you almost cum. He's edging you! The pleasure you were about to experience was cut off, leaving a pressure in your cock. The pressure rebounds through your cock, up through your body. It hits your muscles, pumping them as your cock began to settle. Your former twink body began to fill with some beefy muscles, giving you a swimmer's build.
Your cock settled down completely, and the voice began to go again, more sensual and pleasurable than last time. He sucked and licked your cock, allowing it to build in pressure. He kept going until you were almost to climax, and once again stopped. The pressure in your cock once again rebounded, pumping your body even bigger. You went from a swimmer build to an amateur bodybuilder. You momentarily flexed your muscles, rubbing down your pecs, biceps, and... When you got to your abs, you found a small gut instead, coated in a fine hair. You got shocked, and tried to pull out. However, your cock had grown with your body. It was now stuck in the hole. It would have to soften to get out, but you knew he wouldn't let it.
Just as your cock was small enough to get out, he latched on to your cock once again. This turn was the longest, most pleasurable sucking you have ever experienced. This guy was an expert, whoever he was. He was going and blowing, and you were once again about to cum. Just as you felt your load reach the tip of your cock, he suddenly stopped. You were suddenly terrified. The huge load rebounded, hitting your whole body. Your muscles doubled in size. Your body hair sprouted from all over tour body. And your gut pushed out, rounded out, and began to weigh you down. Your belly pushed against the stall, pushing you out of the glory hole and against the opposite wall. You finally stopped, filling up the entire tiny stall. You were now a 500 lb muscle gut bear.
"You good, man? Wanna finish?" The voice replied.