Brothers bicycle

I had enjoyed the feelings from my cycle saddle and as I got older my panties would sometime get very wet from the rubbing. One day I took my brothers bike to go to the shop, it was quite big and I had to stand on tip toes when I sat on it. As I rode it I felt a nice feeling building up between my legs and the way the saddle was tilted up the front bit pressed right into my crotch. On the way back from the shop I stopped by a gate in a quiet part of the lane and leaned forward a bit on the saddle pressing even more into it, as I sat there I pedalled backwards and soon felt a rising sensation in my stomach, my pussy tingled and I pressed some more on the seat and wobbled from side to side and suddenly I had such an urge to really press down, my legs shook and I pushed my hips forward until I exploded in my tummy. When I got back I had to change my underwear but I rode his bike as often as I could after that.