The one we all hate, who is never content not being the center of attention. Every story told near this guy gets a response of what he would've done, how you screwed up, or a whitty use of math/science to assert him dominance.
I was talking to Carl about an episode of Breaking Bad and he lectured me about all the science that's wrong with the show, while using words he knows that I don't know, just to show how he is the smartest guy in the room and I am not
A metaphor for being the best at something that's unimportant or unimpressive. For example: The fastest pitcher who lives at a nursing home is like being the smartest kid on the short bus.
It comes from the special bus designated for retarded people commonly being shorter than the others.
Zack: I'm the best guitar player in town
Me: Whatever, that's like being the smartest kid on the short bus
combo of smartest guy in the room meets sharpest tool in the shed. see those definitions separately as this shouldn't be a combined term. who knew tools were smart. newsflash...they're not and is the person that says this is quite frankly the smartest in the tool shed