Calvin and Hobbes by Bill Watterson for March 01, 1990
Mom: Hey, no TV until your homework is done. Calvin: It's getting done. Mom: Not with you sitting here, it isn't. Calvin: Hobbes is reading my book for me. After I'm done watching TV, he'll tell me what the book was about, and I'll tell him what the TV shows were about! See, we're doing twice as much in the same amount of time! Mom says you should watch TV and I should read the dumb book. Hobbes: Ugh, I only like nature documentaries.