Most common would be a change in the stiffness, throbbing, a harder pulse. If I'm deepthroating then there's a lot of small twitches.
To those of you who have seen escorts/prostitutes, how was it like? Why did you do it? Did you enjoy it/repeat?
If you are seriously considering one, then a few things to keep in mind:Don't go to a cheap placeKnow what kind of experience you want (romantic, fwb, roleplay, bdsm etc)Relax and have fun!
Words of advice for safety - Hide your face as much as possible Hide the outside world as much as possibleHide any unique objectsOtherwise just have fun!
No :(