I ran across this knee-slapper by Murphy Anderson in Plop! #5 (June 1974). I'm a little surprised DC would do this, even in fun, to their flagship character. This is something I would have expected to see in Mad magazine.
This is a nice but kind of strange story by Sergio Aragones from the DC humor comic Plop! #1 (October 1973). Aragones is certainly consistent and he delivers here. There's some great moments and facial expressions in the first few pages of what appears to be a humorous story (even if it takes place in a prison). The last page is an abrupt change of tone from the first part of the story, but Aragones' humorous style pulls it off. And I could look at that last page for quite a long time too.