Explain SMBC — the wiki for Saturday Morning Breakfast Cereal

This comic depicts a nerdy engineer's revenge fantasy gone wrong. A man returns to confront Sandy, the girl who rejected him for prom, now armed with a giant robot. He gloats about how she must regret rejecting him. Sandy reveals she is married to the bully who used to wedge him every day in high school. In a moment of rage, the man crushes the bully with the robot. But rather than being horrified, Sandy is immediately attracted -- not to the man, but to the robot itself. She asks if it is made of titanium carbide, and when corrected to tungsten carbide, she swoons and cries "Take me! Take me now!" The final panel reveals this is actually a flashback or fantasy during an engineering school interview, where the student awkwardly deflects with "I like making things."

The comic subverts the classic nerd-revenge fantasy on multiple levels. First, the girl is not impressed by the show of force or the man's triumph over his bully -- she is attracted to the engineering itself (the material science of the robot). Second, even this apparent victory is undercut, since her attraction is to the machine, not the man. The final panel reframes the whole sequence as the kind of unhinged motivation that might actually drive someone into engineering school, contrasted with the socially acceptable answer of "I like making things." It is a commentary on how geeky obsessions and social inadequacies can be powerful but deeply awkward motivators.