[M]y [F]irst Dirty Chewbacca

So I came across this thing called the dirty Chewbacca online and so naturally I wanted to do it to my girl. For it to be completely effective, it had to be a surprise. So today when she came back from work, I started making out with her on the couch. She started getting turned on and was starting to put her hand in my pants. I took off my belt and tied her hands behind her back. She loves when I become aggressive in bed and she was grinning in anticipation. I unzipped and whipped out my cock while she knelt on the floor. I let her get me hard by licking and sucking while I sat on the couch and unbuttoned her blouse. I also pulled out her 36 C’s out of her bra so that they were pushed out over the bra, which was all part of the plan but little did she realise. The sucking and licking had made me hard and so I made her go deeper by pushing her head down further. Now my gf is an enthusiastic cock sucker and she loves having my cock down her throat. She also loves my cum and takes every chance to try and milk it out of me. We have a running joke that she would never have a deficiency for protein in her diet.
So I make her throat me for a bit with breaks to suck on her nipples and make out. After some time I made her lie on the couch with her head hanging over the edge. I stood over her with a full view of her perked up breasts and pushed my cock into her eagerly open mouth, all the way into her throat. She gagged but didn’t complain. I held my cock there while pinching her nostrils shut until she made a gurgling noise and I pull out halfway. I then proceeded to fuck her throat, slowly at first, with an increasing tempo.
Now comes the interesting part. After a few minutes, I was getting there. She had no idea that I planned to do the dirty Chewbacca on her. I continued to pump hard and fast with her making some gurgling sounds in between.
I was very close and placed both my hands over her breasts, with my thumb and index fingers gripping each nipple. I was doubled over her from the head end, with my cock down her throat, pumping furiously while holding both her nipples.
With a few fast pumps, I had the familiar sensation of my pelvic muscles starting to contract, and I pushed hard into her throat with her lips touching the base of my cock. I came hard with my cock shooting cum directly into her throat and with the first spurt, I pinched both her nipples HARD!
She SCREAMED in pain, or rather the scream along with the constant spurts of cum, coupled with the cock still deep down her throat, made the unmistakable sound of CHEWBACCA’s GROWL from Star Wars.
I pulled back and pushed back hard again and again while continuing to pinch her nipples hard repeatedly, making her helplessly squirm in pain from being tied up and keep growling like Chewy until I was done cumming. Her nipples had become red and when I pulled my cock out, she started to get angry about the surprise.
I untied her hands and am now writing this while she’s going on about how she should have been given fair warning. What ya guys think? Should I have? And any ideas about how to surprise her next? ?

Source: reddit.com/r/gonewildstories/comments/dsgjr7/my_first_dirty_chewbacca