Ultimate shoulder rides

I recently get in touch with a very BIG BEAUTIFUL HEAVY WOMAN. And I'm not kidding at all! She's 174cm/ 134 kg!
After some small chat online, I got the courage to ask her if she's ever been caried by a man. Being reserved at first,  she told me she always been chubby so never even dreamed of that. But along with my pushy questions, she admitted she would love to sit on my shoulders while I dance. So 3 days till we met, I had opposite states of mind: eagerness and some kind of concern that I might not be able to carie her. When I finaly met her, my anxiety rose up to the ceiling... she was really BIG.
While having a glass of wine she broke it with: "Look, I really dont want you to feel offended but... you look kind of tiny for my wheight." So, after a while  we decided to do it in the knealing possition... Good lord, she was heavy! Even to keep my back stright was a challange! Try to count up to 15 seconds and you can imagine how long I could resist. But to my full amazement she was very excited! Giggling like a child she kept telling me how amazing she felt it. "Have another glass of wine and regain your strength because I want to do it again." she told me with a wink.
During that evening we've played all kind of games: she counting the seconds trying to beat any past record; moving  on top of me trying to make me keep my balance; watching TV with me standing on my butt and her shoulder sitting me with her back against the wall; we even tried some soft domination, with her "forcing" me to hold her on top of me for as long as she wanted - we had a secret sign for the moment I was almost demolished... squeezing her knee.
The next day I had pain all over my back, but fabulous memories...