A very nice massage, usually given with copious amounts of oil.
Once you strip naked in front of a 17 year old thai masseus, you lay down on a bed where she proceeds to give you the best massage of your life.
Towards the end of the massage, you'll be prompted to receive a "sexy massage". At this point she'll negotiate a price with you, ranging from 12$-15$. keep in mind, this is Thailand where its perfectly legal to sleep with a 12 year old but deathly illegal to smoke marijuana.
After the negotiations are complete, you'll get the best damn fucking handjob ever.
Boyfriend: Hey babe, can you give me a Thai Massage?
Girlfriend: Gross no i wont fulfill your sick Asian fantasies..