It's simply a way to be able to search the full movie title without them [quite, though I'd check with a lawyer] breaking copyright.
As these days most people use internet searches rather than physically browsing disks on a shelf, it gives them better chance of a hit.
It's also a way of saving them having to think up anything vaguely clever or amusing.
In the old days, they used to have to come up with vaguely similar titles that would be recognisable to their intended audience..
Jurassic Poke
Saving Ryan's Privates
Flesh Gordon
Sex Family Robinson
...I think you get the idea.