Said of a drawing, where the left and right hands are accidentally switched, or the character has two left or two right hands. When referring to feet, the term "geilfooted" is used.
Comes from the characters Jay and Enya Geil from the anime "JoJo's Bizarre Adventure", who both were regularly portrayed with two right hands.
"Look at this picture. There is no way they can be holding a gun like that without being totally geilhanded..."