Cruel People!

I stumbled (well, not really... if this drops you, you have a problem) upon this in Hakodate, Hokkaido, Japan. That beer is rather tasty and we like it a lot over here at the epicentre of German Madness.

A "Mass", the one litre beer mug, to me is not a desired size either as the beer gets warm and stale before you finish it. But this??? I mean, this hardly qualifies as a shooter. Who drinks this? Is this meant to be for 16 year olds to ease them into drinking?