Mx-Witis is caught after speaking to MxW and is a very serious condition.
Symptoms include twitching, frothing at the mouth, seeing his face on every person you cross and finally ending up in a padded room with a Dairy Milk bar for your only company.
It can only be treated with a strong antibacterial soap, a lot of mouthwash, a visit to the doctors and a restraining order.

When you eat dirt for the first time and leave your family to build a shack in the woods