When I was scoping through the Eddsworld Wikia,
I saw that someone said that these frames were animation errors. [link]
THEY ARE NOT ERRORS! D':
They are ' Animation Smears '.
I draw these kind of frames/inbetweens to portray extremely fast movements.
Smears are usually only shown for one frame,
so they are pretty hard to spot in cartoons unless you pause the animation.
Besides all that, they are kinda fun to draw. <: