Birthday Sex 18+… Part 1

It was my 21st birthday and I was on my way to see my girlfriend in school. She stayed off campus in a 3 bedroom flat which she shared with two of her friends, Tolu and Tochi.
Tolu was short, dark skinned, attractive, Tochi however was a bit taller and light skinned, but still reasonably attractive.
My girl’s bestfriend however was Ife, who was in the same department as her and whose best feature (in my humble opinion) was her big br**sts.

Apparently the four of them were taking me out for a meal and drinks that night. I arrived at their house and rang the doorbell, Tolu answered it, wearing a dressing-gown, obviously still in the process of getting ready to go out, she gave me a kiss on the cheek, wished me happy birthday and ushered me into the house.
I asked where my girl was and she replied that she was in her bedroom, but didn’t want me to come in just yet, as she had a surprise for me.
I went to sit down on the couch, but Tolu quickly stopped me, and pointed me towards a chair placed in the middle of the room, as apparently I had to be centre of attention in the middle of the room. I didn’t see the point in arguing so I took the chair.
But as soon as I sat down, I felt my arms being pulled back behind the chair and heard a click and I could feel my hands were restrained. I looked behind me and saw that my hands had been handcuffed behind the chair.
I turned my head back around to protest and saw Tochi and Ife were now standing next to Tolu, both also wearing dressing-gowns.“What do you think you’re playing at?” I said.
“There’s been a slight change in plan” Tolu informed me. “We’ve decided not to take you out after all, Instead we’re all going to have a cosy night in.” “Why the handcuffs? And where is Moji?” I demanded.
(Moji being my girlfriend)
“Well, as we’re not going out we had to think of a way to treat you, as it’s still your birthday after all, and Moji kindly agreed to let us have some fun with you, but we didn’t want you running away, getting impatient or generally doing anything we don’t want you to, so we’ve had to handcuff you to the chair.” Tochi enlightened me. “And to stop your babe from interfering, unfortunately we’ve had to handcuff her to her bed, but don’t worry, she’s fine, and you’ll get to see her later. But for now, sit back, do as you’re told and most importantly enjoy yourself!” Ife Said.
With that the three girls undid the ties at the front of their dressing-gowns and to my amazement, one at a time, took them off.
Tochi was the first to slip out of hers, revealing herself to be wearing just a pink bra and matching thong and then doing a little twirl to make sure I’d got a good view.
Tolu took hers off next, to reveal a black push-up bra that gave her a nice cleavage and matching tie-side briefs, she also gave a little twirl to give me a good view.
Finally Ife took her dressing-gown off, revealing a white bra that was struggling to contain her big br**sts and matching underwear that was revealed to be a G-string upon her completing a twirl.
I couldn’t believe what was happening, Moji’s hot friends were in just their underwear in front of me, apparently ready to give me a good night, something I was more than willing to accept, even if it wasn’t being forced upon me via handcuffs, after all this was already turning out better than my wildest dreams!
WATCH OUT FOR PART 2