a purple unicorn tangoing with a turtle

1 oz Bully Boy "Our Fathers" Gin
1 oz Green Chartreuse
1 oz Luxardo Maraschino Liqueur
1 oz Lime Juice
1 1/2 oz Heavy Cream
1 Egg White
4-5 drops Orange Blossom Water

Shake once without ice and once with ice, strain into a tall glass with 3-4 oz soda water, and garnish with an orange twist.
Two Saturdays ago, one of my old coworkers and his friends stopped by Our Fathers for drinks. For his last round, he requested something strange; I replied by asking "How strange? What do you think this is -- Drink or something? ...Like a 'purple unicorn tango-ing with a turtle' strange?" That gave him pause, and then he answered, "Yes, I want that drink!" I wandered off for a second to think, and what popped into my head was beginning with the Ramos Gin Fizz, taking out the gin, citrus, and sugar syrup, and replacing it with a Last Word. Given that he loved both drinks on their own, he was rather pleased and declared that this lived up to the name.