What is "polandball"

Polandball, also known as countryball, is a user-generated Internet meme which originated on the /int/ board of German imageboard Krautchan.net in the latter half of 2009. The meme is manifested in a large number of online comics, where countries are personified as (typically) spherical personas decorated with their country's flag, interacting in often broken English. The characters poke fun at national stereotypes and international relations, as well as historical conflicts.

The comics style may be referred to both as Polandball (by convention, even in cases where there is no Poland among the cartoon characters) and countryball (or, collectively, countryballs).