Okay, nothing seems to get lefties going than just mentioning SCISSORS. And a righty's response is generally, "What's the big deal?"

Okay, here's the big deal. Watch this.

So now you know! (And knowing is half the battle...)

Where can you get some?
anythingleft-handed.co.uk
The Silver Needle - Tulsa, OK. They have a single pair of embroidery scissors that are 3.5 inches long.

I have yet to find many professional, sewing or 'adult' left-handed (or I guess we should say left-bladed) scissors in the US. If you know of a manufacturer, importer, or store let me know! I'll put it up here!