When it comes to lingerie, it's a veritable Noah's Ark of sizes, shapes and colors -- and it all looks great.

But do you really understand and appreciate them? You've probably been more focused on wooing your girl than sizing up these wonders of modern lace.

But with Valentine's Day quickly approaching, you'll have to be a quick study so you don't look like even more of a moron than usual skulking through the aisles of Victoria's Secret, in search of a gift

Fortunately for us, The Bachelor Guy has crafted a guide to help you select the proper thong, tanga or teddy. And if you don't know what a tanga is, you need to start studying.