The rum itself is about 10 years or older, I got it free from my friends mother who was giving away a ton of alcohol.
In the same night drinking, I noticed
in the left half of my left hand (Palm down) were kinda aching but nothing serious very very mild. I recognized this feeling as it happened the night I had 5 beers, but it went away easily by morning. I thought hey that's pretty nifty, a body indicator that shows how intoxicated I am.