Massaging went wrong

I was on a vacation at my favorite hotel next to the beach, i just turned 18 and i had a couple of drinks to celebrate since it was my birthday. As i was walking to my room one of the housekeepers stopped me and asked if i was interested in the 15℅ discount on the massaging sessions this week. I couldn’t miss this chance, not on my birthday. I pictured a young female masseuse and sauntered there. The masseuse turned out to be the opposite: a wrinkled, lanky man with a graying beard.

But I did not want to be rude, so I paid , roughly about 50 dollars. He asked me to strip down to my underwear so I did. I lay down and close my eyes. His fingers were long and cold, but his touch on my back was soothing. It was calming and very relaxing
so i fell asleep without even knowing. After a while i no longer felt his touch around my body, and before i knew it I woke up with his penis inside my ass.This guy was pounding my butt like a thirsty dog. I couldn’t believe what was happening, I was getting butt-fucked from a stranger. He kept on pulling my hips until it was too late for me, this guy started ejaculating inside.I don’t know if he planned this , but i shoved him off.