Calvin and Hobbes by Bill Watterson for January 19, 1989
Transcript:
Mom: Calvin, what are you doing? You're supposed to be on the school bus! Get over here! Calvin: Our hero blasts off with his emergency jet pack! Another daring escape for the intrepid Spaceman Spiff! Zounds! The zogwargs are on rocket scooters! Spiff fires his death ray blaster. Mom: It's your own grave you're digging, buster!
Apparently Zogwargs are immune to the death ray of his blasters.