This phrase is a combination of the two phrases: the smartest guy in the room, and the sharpest tool in the shed. The phrases are practically identical in meaning, so combining the phrases is a move of a literary genius. The phrase: the smartest tool in the shed means the smartest tool in a hypothetical shed.
He’s not the smartest tool in the shed, it takes him a little bit to understand.
He might be the smartest tool in the shed, but that doesn’t make him a good person.
He might be the smartest tool in the shed, but that doesn’t make him a good person.
by Gmannetje June 27, 2022
Get the Smartest Tool in the Shedmug. 
a bunch of retards who hang around a shed named sheryl they make shitty jokes and rape each other in the corner
by aboiofashed June 4, 2019
Get the shed boismug. To relinquish or releive yourself of something.
by Stephen Markland August 18, 2018
Get the Shed itmug. It is a shed where a person or one's family stores light/sound, depending on one's /one's family's culture. Commonly used in the 1920s.
by Benfredrickson85 September 8, 2025
Get the Light Shedmug. by someskyrimfan2 May 14, 2023
Get the Shedding Inhibitionsmug. When she saw Brian hooking up with her best friend, Simran started shedding beer tears of pity for her friend.
by Eklavya May 25, 2021
Get the shedding beer tearsmug.