Sorry if this joke does not strike a chord with many viewers.. but this is a pretty funny joke in terms of electronic engineering. Me being an electronics engineer, drew this for submission to my college magazine where it might have been better understood , but didnt submit it finally though ! so thatt u understand, A karnaugh map is some thing used by elec. engg to simplify some designs before implementing it. so a geek electronic guy would be funny in trying to navigate the city with a K-map