The only time I have hired a provider he was clearly heterosexual and he didn't want me to do many things like kissing, or touching his balls or even talking. He said he needed focus to get hard. He was a big muscular fit 25yo Spanish frat boy type. He agreed to let me deepthroat him while I was handcuffed hands at my back with real cuff i had brought to the meeting.
Things were going well but not great. He was not completly hard and that let me deepthroat him easy. Then his request came. He asked me if he could pinch my nose while I was sucking. I said "I guess so" not knowing exactly the implication and in less than a second he was fucking my throat while pinching my nose. The thing I learned is that gag reflex multiplies by 10 while doing that. Suddenly I was having a really difficult time, choking a lot, with loads of tears not being abel to resist because I was handcuffed.
Automatically his cock got hard like a wood and after a few minutes he unloaded hard. Seconds after cuming he started to get nervous as if he was afraid of what just had happened. I guess he was not aware of the sadic beast inside him and he was completly against cumming in this meeting.
I was more than satisfied but I can imagine this behaviour being a problem with other clients xd.