The Gang Gets Tested
S18, E3: Dennis and Dee are diagnosed with ADHD, and even more shocking: Mac isn't. They go back to school for a do-over now that they understand their brains better. Written by Charlie Day and directed by Richie Keen.

S18, E3: Dennis and Dee are diagnosed with ADHD, and even more shocking: Mac isn't. They go back to school for a do-over now that they understand their brains better. Written by Charlie Day and directed by Richie Keen.