After a week-long camping trip suffused by rain from beginning to end, only for the sun to appear immediately after everything was packed up, the final panel combined a Noodle Incident and an implied Cluster F-Bomb. Of course, given the father's reaction when he drops something heavy on his foot, it may simply have been a cluster Angrish bomb.
Calvin (eagerly): Did you know what any of Dad's words meant?
Hobbes: No... but I wrote 'em down. We can look them up later!
- After another camping trip when Calvin can't wait to get back to civilization, his dad decides to get a DNA test to see whether Calvin is really his kid. His mom replies, "Take my word for it".