For me, the remedy that usually works is taking a about a half teaspoon of sugar and putting it on the tip of my tongue. Learned it from my mom--that's how she'd fix the issue for me when I was a kid. It seems to work. Just let the sugar dissolve on its own.
Sometimes I would also hold my breath, but I never found that alone to work--the hiccups would just continue anyway while I was holding my breath!
I never heard of the rubbing the earlobes trick--might try it next time. (Must be similar to the accupressure trick of massaging the 'web' between thumb and forefinger for a headache remedy.)