You decided that licking his feet isn't something that unusual of a punishment with your stepdad, and the chances are he was gonna make you do that anyway, so you decided to take it out of the way for the day. Your stepdad was surprised that you were so willing to lick his feet and he didn't like that. So right before you took his shoes off he decided to give you an atomic wedgie just so you would suffer like he wanted you to.
And since you were so focused on the sharp pain that was currently invading your butt, you took to long taking your stepdads shoes off. Luckily he was being distracted by the sight of you struggling to move, so he didn't really seem to mind. You then started to take his shoes off and immediately realized that he was wearing an old pair of socks that he never cleans (you know this because you have had them stuffed in your mouth many times). You then take his socks off and start licking his feet clean, hoping that having to suffer through the taste of week old sweat would be enough to please him.
Sadly that wasn't the case. After you managed to cover his entire feet in your spit, your stepdad decides that he needed to dry his feet on your face and make you suffer even more. He then stuffs his socks in your mouth and hangs you in his bedroom closet, that was filled with his smelly work shoes, and leaves you there until he feels like his socks are clean enough.
The End
