Explain SMBC — the wiki for Saturday Morning Breakfast Cereal

This comic shows a family watching fireworks. The children are complaining -- "Aww! Come on!" and "Not again!" -- while a parent enthusiastically declares: "You should enjoy it more, children! It's technically harder!" The caption at the bottom reveals: "Weekend activity: Testing my missile defense system on fireworks displays."

The humor works through a reveal that recontextualizes the entire scene. Initially, the reader assumes the family is simply watching a fireworks show and the kids are bored or disappointed by it. The parent's comment that it is "technically harder" seems like a weird thing to say about fireworks. The punchline reveals that the parent has been shooting down the fireworks with a missile defense system -- the children are upset because the fireworks keep getting destroyed before they can enjoy them, and the parent is bragging about the increased difficulty of intercepting them.

The joke plays on the trope of the overly enthusiastic dad whose hobby ruins things for everyone else, escalated to an absurd military-industrial extreme. It also satirizes the mindset of engineers or military enthusiasts who are so focused on the technical challenge that they are completely oblivious to the fact that they are ruining the experience for others. The "technically harder" line works as a double meaning -- it refers both to technical difficulty and to the mundane sense of "technically" as a qualifier.