visual pun
A type of pun that exploits a double meaning of words for one or more objects in an image, or a combination of words that individually describe the image but together remind the viewer of something else.
Many visual puns depict a figurative expression literally:
post #736166 looks like a hybrid between a wolf and a spider, which may or may not remind the viewer that there really is a family of spiders known as wolf spiders.
Related tags:
This tag implicates pun (learn more).