I was flipping through my Pocket Ref this morning, looking for a conversion factor when I came across a unit of measure I had never seen before: the jigger. Apparently a jigger is:

- 0.059 fifths
- 1.5 fluid ounces
- 0.09375 pints
- 1.5 pony (?)
- 1.5 shots

Consider yourself enlightened.