I was replying to Tony, who said he doesn't get legit/professional massages because he's used to getting happy endings, and is afraid of rocking a boner in front of the RMT
My message was basically saying if he keeps his underwear on during the massage, even if he gets a boner, by wearing underwear, its a way of telling the RMT he isn't asking/expecting an HJ.
Alternatively, you can use this tactic for those china town parlors or mall parlors where even though they're supposed to be regular massage places, they're known for giving HJs. Obviously if you like the masseuse at the parlor, get naked, but if she's not your cup of tea, you can keep your underwear, or even pants on, and say just rub my back/neck/shoulders etc.