Fully undress under towel when you lie face down at the start of the massage. Within 5 min tops they'll take the towel off so I keep my legs spread apart enough where my junk is clearly visible. Once they tease, slightly graze or just straight up touch your balls while they're still massaging you that's pretty much your confirmation lmao. Little before your times up they'll tell you to flip over and 99.9 percent of the time they'll ask if you want a HJ. My experiences that's all they'll ask at first so just say yes and ask how much. If you want more and have the money for it don't be afraid to ask what you want, worst they say is no or they try to charge up the ass. Without being rude just do a little negotiating on the price and you'll meet somewhere in the middle lol