Smardumb
Someone or something that is equally smart and dumb. Someone who can solve complex calculus equations in their head without having to use technology or paper, but also thinks the world is flat. A 500$ smart phone, which is incredibly powerful for the size, but compared to a Ps4 which costs the same amount, it is a child's toy. A synthesizer that has 128 note polyphony and over a thousand internal sounds, but you can only play one sound at a time, and since you only have twelve fingers, and the synthesizer does not include a multitrack step sequncer, you can only play 12 of the 128 note polyphonic notes at any given time.
A rather Smardumb F.B.I. agent offered to give marijuana with someone who had expressed interest in it, hoping the individual would lead them to illegal cannabis suppliers after gaining his trust. Unfortunately, the only leads he had were to other Smardumb F.B.I. officers attempting trying the same trick.