Had a phone call asking if I did a Tantric massage...what is that ?

Tantric massage is about awakening the senses while giving a very erotic and very relaxing time. It involves the whole body and many techniques, the lingam massage is a part of it. I regularly do tantric massages, it's a very pleasant experience for everyone involved. It has many techniques, you have to learn about it if you want to do it properly, if you are interested, you can find many great and cheap tantric massage tutorial videos on the internet.

Cynically, a long-lasting hand job while calling it his lingam.

Google comes up with lots of sites selling, one way or another, the alleged mystic nature of this.

ROFL
That pretty much sums it up in a nutshell, that or a really, really slow fuck, whilst flexing your pussy yoni muscles on his lingam to achieve multiple orgasms. God save me.