After all, this isn't the Gor roleplaying game.
I was looking at a list of spells from the new edition (3.5) of Dungeons & Dragons, and thought I'd read a spell name that couldn't be right. I looked again, and realized it was actually "Enlarge Person, Mass", much to my relief.
Never mind what it was that I thought I'd read. Let's just say that I've been getting way too much spam lately.
Well, the very fact that you mention Gor (accursed John Norman, I stab at thee) kind of tells us what kind of spell you thought you were dealing with.
I had a college roommate way back when who was into the Gor novels. Thought they were the one of the greatest epics of all time. I read the first one (Tarnsman?) once; though I don't recall the degree of misogynistic nastiness that made the serious infamous, I didn't find myself sufficiently interested to go any further.
Wasn't until much later that I learned of the S&M types who played at living the Gor lifestyle. *shudder*