*I used a glass one to make this Instructable more clear, but to maintain the mystery when doing this in front of others, a non-transparent/steel one is best.
Step 2: The Bottom Layer: Grenadine
Set up your 7 shot glasses in a line in front of you. Place your shaker just in front of the line of glasses and put everything else you'll need within reach.
Measure out 1/2oz. of grenadine and carefully pour it into the bottom of the shaker, being careful not to get it on the sides.
Step 3: Ice Ice Baby
Gently add crushed ice to the shaker until it is 3/4 full.
Step 4: The Middle Layer: Pineapple Juice
Place a big spoon over the ice and SLOWLY pour 6oz. of pineapple juice into the shaker.
Step 5: The Almost Top Layer: Vodka
Leave the big spoon resting atop the ice and pour 1oz. of vodka slowly onto the spoon.
Step 6: The Tip Top Layer: Blue Curacao
IMPORTANT: The blue curacao is actually the heaviest of all these liquids, so it's very important to start pouring the shots immediately after adding it to the mix.
Slowly add 3/4oz. blue curacao to the tip of the spoon only.
Step 7: It's Pouring
As soon as the blue curacao's been added, remove the spoon and place the cocktail strainer into the shaker. Start pouring the shots right away from the side of the shaker your added the blue curacao to.
I find it helps to count as you pour to try and get the shots even-ish. I counted to four for each pour.
You may have to try 3-4 times to get your pour timing down to avoid having a brown shot instead of yellow. (Especially if you choose to wear the unicorn head while doing it.) But once you get it, you will be able to pull this trick out anytime a party needs a pick-me-up.
Step 8: How To Make Friends and Impress People
Maybe that should have been the title of this 'ible. : )
Have fun with this one you guys!