Use the ice to fill both the cocktail shaker and rocks glass to the top.
Take the vanilla vodka and measure up 1.5 oz with the jigger. Dump the vanilla vodka into the shaker.
Take the banana liqueur and measure up 1.5 oz with the jigger. Dump the banana liqueur into the shaker.
Take the butterscotch schnapps and measure up .5 oz with the jigger. Dump the butterscotch schnapps into the shaker.
Take the chocolate liqueur and measure up .5 oz with the jigger. Dump the chocolate liqueur into the shaker.
Put the shaker top on and shake it up. The shaker will get cold on the outside after about 15 or so seconds.
Remove the shaker top off and put the strainer on the shaker.
Pour the drink into the rocks glass.
If you want to add a banana slice as a garnish:1) Peel a banana.2) Cut a slice about an inch or two thick.3) Cut a small notch in the slice and stick it on the rim of the glass.