If you ask a person to draw a bomb, this is probably what you will get: a spherical black object about the size of a bowling ball with a fuse sticking out of it. Sometimes it may have the word "Bomb" (or "Boom") written on it in bold letters. Very common in cartoons and comic books, and somewhat surprisingly in the relatively new medium of video games.
This actually has a basis in history: Before [...] [tvtropes.org]