Dwarf refers to a person with one of several varieties of a specific genetic condition called dwarfism. A dwarf has disproportion of body parts. This is generally caused by a genetic or nutritional disability. Any adult human below the height of 4'10 (147 cm) is considered a dwarf.
One Piece has a great story and does not have a lot of filler episodes.
I've got two of these and they don't leak (both transporting and pouring). My personal experience with plastic versions is that they all leak and are generally tippy. And no need for plastic pieces, funnels, etc. as the 5/8 spout fits right in the filler hole nicely.