Oh man . . . flashbacks.
My college science fiction club delighted in defacing Chick pamphlets, posters, and such.
We once got our hands on two cheap coloring books. One was a He-Man (or maybe She-Ra?) volume. The other was something like "Mitch and Mike's Space Adventure," which started as a slender volume about a moon mission and then was expanded (different artist!) to add activity pages and a FIFTH CHARACTER, a little girl, to add some balance. And the new artist / author couldn't keep the old character's name's straight, so Mitch became Marvin or something like that.
We really went to town on those things. Scatalogical, lewd, violent. And frequently very clever. In one scene, an astronaut was heaving around a giant boulder at waist level. My friend drew an alarmed face on the boulder, added tentacles, and a voice bubble by which the astronaut expressed his delight in porking the natives.