I had a two-girl massage once and I was offerred a BJ by one of them. Another time I was offered a snog & a BJ.
In Thailand I had a Thai massage and at the end she looked me in the eye and asked if I wanted anything else. Naively, I hadn't been expecting the question, so I declined. In the pub that night I spoke to a couple of Scandanavians chaps who had taken the girls up on the offer and they had a VIP jacuzzi full service.