Toss ice into the glass so that it fills it about to the top.
Grab the rum. Use the jigger to measure 2 oz of rum. Toss that into the glass.
Grab the limeade. Use the jigger to measure 4 oz of limeade. Toss that into the glass.note: you can also just pour the limeade directly into the glass instead of using the jigger. Just top the glass off with it.
To mix it all together, you have two options:1) Gently toss all ingredients into the shaker and then back into the glass.2) Use the bar spoon and stir well.
Notes
As an alternative to building this drink in the glass, you can build it in the shaker.
also add ice to the shaker.
Measure all ingredients into the shaker.
Put the top on the shaker.
Shake for 15 - 20 seconds.
Put the strainer over the shaker and pour into the glass.