Methods to decrease IQ?

Ever since I was a young child it was I who awed adults with my brilliant equations and sentences. But as I got older I struggled to connect with people my age. Whenever I try to talk to a peer about anything I am met with sneers and confusion. My vocabulary is far too advanced for the laymen. I am rather furious at the world. I feel like that scene in the regular show on a regular show where the raccoon and bird drinks a large quantity of the “brain juice” and get scolded by the gumball machine.

One idea I have is banging my head against a hard surface daily to damage my prefrontal cortex. I suspect a lot of “normal” people have a underdeveloped prefrontal cortex. Another one would be to consume an OTC medicine “Dextromethaphan” which according to my research should cause IQ damaging effects with regular use. Any other ideas?