A jank ball is a word used to describe a person. It is taken from the word jank so its practically jank. Jank ball can be used to cover up from swearing when around children with virgin ears or when one is trying to be some what polite in public or in name calling. Jank ball can subsitute for pretty much any name but primarly the names of fucker, doucher, douche bag, idiot, tool etc. Jank balls are just idiots who make happy people frusterated.
Jack: that guy is such a jank ball!