"Enjoy yourselves, you two" my wife Cate said over her shoulder as she got ready to go out for a few drinks with a friend. It was a Friday night, nearly two frustrating weeks after the last little episode. In fact a perfect illustration of the old saying that a watched pot never boils. "What are you boys getting up to tonight?"

"Oh, err, we'll probably watch a DVD" I replied. "Won't we Peter?"

"Um, yes. Have a nice time Mum."

*****

"Upstairs with you, my lad" I said to my stepson, after I'd allowed a good 15 minutes in case Cate came back for something. Which she didn't. I followed the boy's slim figure up the stairs after getting a small package that I'd hidden behind a loose panel at the back of the hall cupboard.

"Are you going to spank me first?" he asked nervously as I came into the bedroom.

"Why? Have you been a naughty boy?" I asked, raising a quizzical eyebrow.

"No Dad. It's just that you did the last two times, and I just thought...."

"Spankings are for when you've done something wrong. All I want you to do right now is get undressed. OK?"

"Yes Dad" he replied, unzipping his shorts. "Do you want me to put on the same things?"

"Hmm. No. Let's have a change. Your mother has a very nice pair of silky white stockings with lacy tops. Get those, and I'm sure you know where they are, and then there's a matching set of lacy white bra, garter belt and panties. We'll finish off with, um, her white high-heeled sandals. Yes, that should look very nice on you." The thought began to stiffen my resolve, and it obviously excited the boy too. It wasn't long before he was dressed and parading up and down, obviously enjoying himself as he posed for me.

"Alright Peter" I said after a while, standing and adjusting the front of my slacks. "Come over here, turn your back and cross your wrists behind you." As he did what I asked I opened the small package and took out a few lengths of soft white rope. His eyes widened a bit, but he didn't say anything.

Taking the first length I wound it around his crossed wrists a few times, cinched it between them and finally tied the loose ends. This was actually the first time that I'd ever tied anyone up, and I was relying on what I'd seen on the net for technique.

"Is that OK?" I asked. "Not too tight?"

"No Dad, it's fine" he replied, with perhaps a little tremor in his voice.

The next rope, a lot longer, made a few loops around his body and arms just above the elbows and below the sock-stuffed bra. I cinched all the loops together between his arms and body and firmly tied the loose ends. It took me a bit of trial and error to get it right, but the final result was worth the trouble. The loops looked appealing on his body, and the sight made my cock throb.

"OK son?" I asked.

"Yes Dad, it's fine."

"How do you feel now?"

"Good. It feels really good" he added, in a slightly thick tone. A glance at his crotch showed a distinct ridge in the front of the lacy white panties.

"Alright, I want you to sit on the bed now" I said. Taking his arm I helped him to sit on the edge of it. I wound the next piece of rope around his crossed ankles a few times, cinched it between them and tied a good knot, taking care not to snag the white stockings. Two more lengths bound his legs in similar fashion, both above and below the knees.

Taking a few steps back I admired my handiwork. There was my 13 year old stepson, nice and firmly although not tightly tied up and in his mother's lacy white lingerie. It wasn't at all a bad effort for my first bondage session, although at the back of my mind was a vague idea that something was missing.

Almost without thinking about it my hand went down over the hard bulge in the front of my slacks and Peter's eyes followed. When I looked at his crotch I could clearly see the outline of his small cock in the front of the lacy white panties.

Then it hit me: I'd forgotten about a gag. Going to my own bedside table I opened the drawer and got out a handkerchief and an old scarf that I hadn't worn for a long time and came back over to the bed.

"Open your mouth Peter" I commanded.

He looked a bit uneasy, but did as he was told. I folded the handkerchief in two and pushed it into his mouth, then wound the scarf around his head a few times to hold it in, knotting it at the back of his head. It worked, but didn't quite have the look I wanted. A purchase at a shop selling highly specialised merchandise was in order.

"Are you OK son?" I asked. He nodded and made a few mummphs into the gag.

I let him sit there for a while, enjoying the feeling of my rigid cock seeping pre-cum inside my pants for a while as I looked at my bound, gagged and lingerie-clad stepson.

*****

"How time flies when you're having fun" is an old saying, but all too true. A glance at the bedside alarm clock showed that Cate would be home in about an hour, so it was time to untie Peter and put everything carefully away.

*****

Now that was surely a whole lot better than all of those phoney team bonding exercises at work I thought to myself, as I carefully put the ropes back in their hiding place.