I'm a moron, but...

I have a loop in my chain (single loop). No idea how it got there, too embarassed to take to LBS to remove... help me save face: how do I get rid of it?! Can't seem to "flip it" over or twist it, don't want to split chain.

Name withheld to protect the stupid...

 

I can't think of a way to get a single loop...

I would check out the RD area to see if there is something out of place there.

 

If your bike still rides OK then I wouldn't worry about it too much.
Seriously, you're kidding, right? A single loop?

 

Strange thing to happen.... did it happen while you were riding or somehow when you were off the bike wheeling it around?

Try shifting to your smallest cog, and then dropping the chain off the chainrings and resting it onto the bottom bracket. Then pull your derailler cage forward so the chain is really loose. Maybe you can undo the loop with it like this? Otherwise you might need to break the chain.