Sounds really interesting o.O I may have to try it! Definitely a high proofed rum probably fucks you up loll
A weaker shot, but still delicious, is 1oz Pineapple Juice, 1oz Vodka. Pour it into shot glasses and then dribble grenadine down the side of it. The weight of the grenadine (make sure to buy the syrup ex: Roses Grenadine) sinks to the bottom so you take the shot and the grenadine is the last thing that you taste.
Its called a Pineapple upside-down shot. Quite delicious ^^