Jeff looked at the screen, his temptation to jerk off rising by the minute. Unable to concentrate with his twins standing straight at their 9 inch length he pressed yes. The window on the screen showed his old version of himself and beside it the new version, they overlapped and a window popped up.
OVERWRITING OLD FILE....
"Shit!!!" Jeff yelped, he moved the cursor over the cancel button and before he could press it, it disappeared, but he had just pressed a button that was underneath the window. He sat up and looked at what it said.
DOUBLE EFFECT
"Oh no." He felt a shifting in his cocks and jerked back into his chair, trying not to scream in his arousal and horror as he watched his now large cocks grow into mammoth sizes. His balls ballooned from the size of baseballs to the size of cantaloupes, spilling out into his lap as his cocks thickened to the width of baseball bats and lengthened to 18 inches long, standing tall above him. The arousal was intense and when it stopped he fall back in his chair his cocks and balls spilling onto his chest, both of his twins pressed against his cheeks. Unable to control himself any longer he took one and shoved it into his mouth, sucking on it as he jerked both of his massive cocks furiously. It only took seconds and he cam, swallowing his cum and blasting it against his floor with the other, He managed to gain composure long enough to breath while his twin beasts lay on top of him. He got back up, shaking from the orgasm and sat back down in his chair. The weight on his crotch made his reality clear, he was stuck with twin cocks. But maybe he could adjust them a little.