True most oil body to body massage shops offer them up on the service menu for an extra price. You would usually have to pay an extra 100THB to 200THB on top just to have a lovely young Thai masseuse juggle the boys.
Well... maybe it works temporarily with the blood pressure issue but as far as backaches are concerned you're better off with a couple of aspirins.
Personally I am no big fan of the testicle massage. I have tried a lot it many different shops all over the Phrom Phong section of Sukhumvit and then some in Patpong around the Silom area. Those are two hot spots for oil massage with extra services.
So what's the experience like? Well, it's quite simple. The massage girl puts oil on your veg and plays with the meat for around 5 to 10 minutes. Remember, the cost of a balls massage does not include full service if any is provided. If you finish you'll have to pay extra to get laid.
I find that a lot of the ladies handle the goods a bit too rough. Sure for the first few minutes it's fun. But any longer it can get down right uncomfortable. Okay, some of you guys are probably calling me a big pussy. Maybe you're right. I do have a low pain threshold. Because I have a lot of friends who do enjoy it.
The only place that I had a halfway decent balls massage was over at Ben Ten, which is about 100 meters from the go go bars of Patpong Soi 2, over on Silom soi 6. Or head over to any one of two Akane Fashion Massage shops I wrote about on this post, though you won't find testicle massage listed on their menu from my experience it's already included.
BTW, I'm checking out a bunch of new shops, so you can expect a post on my 5 favorite oil massage parlors coming soon. So stay tuned all you perverts!