Consider yourself a big Starbucks fan? Well, do you know about the coffee chain's secret menu?

The java shop and other fast food chains are riding a secret menu wave and doing big business off items that most people don't even know about.

The trend is sparked by a move to entice younger customers by only announcing these special items on social media or by word of mouth.

Chains don't promote these items in-store or on their websites, so you have to walk in already knowing what to ask for. Websites like @LifeHacks on Twitter, Starbucks Secret Menu and more clue you in on the elite offerings, but finding them also takes some digging.

Some secret Starbucks drinks include the Twix Frappuccino, Raspberry Cheesecake Mocha Frappuccino, Thin Mint Frappuccino, Cotton Candy Frappuccino and Cake Batter Frappuccino.