Someone who is continually butt-hurt by the actions of Dominic Cummings' trip to Barnard Castle to "test his eyesight" (see "To Do a Cummings"), and can't stop referring to Dominic Cummings' past actions, particularly in relation to absolving blame from themselves or inferring that an action can be lessened by "the Cummings defence", or someone who seeks to blame Dominic Cummings for any fallout of any incident, however remote it may seem.
See that rave people attended? That's because of Cummings.
"You're suffering from Cummings-itis"

The second Covid19 spike in cases is entirely down to Cummings testing his eyesight by going to Barnard Castle.
"You're definitely suffering from Cummings-itis", there's no known cure apart from less woke-ness.

Bloke got sacked for flying a banner over a football stadium, how comes he got sacked and Cummings got to keep his job?
"You're definitely suffering from a severe case of Cummings-itis".
by star2uk June 29, 2020
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