Four engineers were sitting around one day trying to figure out who might have designed the human body.
The first fellow said, "I think it might be a Mechanical Engineer, because of joints and muscle and sense of balance." The other three nodded their heads and said, "Yeah, could be."
The second fellow said, "I think it might be an Electrical Engineer, because of the nervous system and neural network." The other three nodded their heads and said, "Yeah, could be."
The third fellow said, "I think it might be a Chemical Engineer, because of hormonal balances and metabolism." The other three nodded their heads and said, "Yeah, could be."
The fourth fellow snaps his fingers and shouts out, "I know, it HAD to have been a Civil engineer!" The other three ask "Why?"
"Well," replied the fourth fellow, "who else would put a waste water drainage right through a recreational area?"
ha! cute joke!