After Carlos wore Zach all day, Zach slowly became both shoes. It was still extremely painful, but better. Carlos had no clue anymore that Zach, an underclassmen from the football team, was somehow his sneakers.
That night, Carlos' girlfriend, Katherine, came over. Carlos hadn't been wearing his shoes since he got home, but put on slippers after stripping down to jack off to himself in the mirror.
Luckily for him, his girlfriend showed up just as he was getting turned on by himself. He rushed to put shorts on, again, no underwear, and greeted Katherine at the door. She came up into his room and started talking to him on the bed.
Then, Katherine stripped down to just the undergarments and Carlos took off his shorts, but not his slippers. They started making out and that turned into near sex when Katherine told Carlos she couldn't be with him.
She got redressed and ran off, leaving Carlos alone, still not having orgasmed.