Why is the Rum Gone?

My significant other decided that Friday night was mojito night. It wasn't a bad idea, but after one I was feeling a little too good. I sipped a second drink a little, while he finished off his third. Then, I find out that an entire bottle of rum had gone into the five drinks. My bartender is going to require supervision in the future. Needless to say, I skipped my workout in the morning...