Calvin and Hobbes by Bill Watterson for May 21, 1988
Transcript:
Hobbes: maybe you should tell your mom about the binoculars, and whe can help somehos. Calvin: Tell mom?!? Are you crazy? No way! Hobbes: Why not? You've got to tell someone. Maybe she can think of something. Calvin: At times like these, all mom can think of is how long she was in labor with me.
Why does Calvin keep asking where babies come from? The fourth panel here makes it clear that he knows.