Unexpected turn on vacation as stepson pleasures himself in hotel room, leading to unexpected climax

After a long holiday, our family decided to go to the hotel for a rest. We rented two rooms and I went to my room with my stepson. He wanted to play games on his computer, but then he started to caress himself and I had to swallow it all. I didn’t expect anything from him because I never saw him in this state before. I was afraid that he would stop, but he did not stop and I had to swallow all of it.It was a very pleasant moment for me, because I had never experienced such a strong orgasm before. I was surprised by how much pleasure he brought to me. The whole situation was unexpected, but it was very pleasant to me. I hope that this will not happen again, because I think that this is not quite normal. But who knows, maybe next time something interesting will happen.