RIHANNA was photographed leaving a store in West Hollywood with a shopping bag. Not so strange...

Until you take into account that the bag was see-through...and what was inside it was an ADULT LOVE TOY for guys who want to go solo, if you know what I mean and I think you do.

Oh, and for some reason, the bag had marijuana leaves printed on it.

The toy in question is called a VACUUM CUP. Obviously, we have no idea who it's for.