i wish i had the balls to go to a massage parlor and ask for a handjob at the end!
ahahahahahahahah
Here's a tip - they will ask you.
They generally do your back first, so you lie there on your front, butt nekkid with some woman smearing oil over you.
When she does the top of your legs/ass, you generally know if she's gonna be asking if you want a bit more 'cause she'll keep tickling your balls and playing with your taint. She'll know you want something extra when you turn over and take her eye out with your stiffy.
Hope this helps.