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1.
Obsessing over a particular subject unnecessarily. Making the certain subjects become their life in it's entirety. One may believe the Syndrome has gone when in fact they have just moved on to another subject to obsess over.
'Man I love Green Day'- This person has Morris Syndrome for Green Day.

'Team Jacob'- Morris Syndrome and idiot.
by Billie Joe Armstrong Baby xxx October 25, 2010
 
2.
A form of male pattern baldness in which the patient's hair appears to migrate from the scalp to the face, normally taking the form of a goatee beard, or in extreme cases, ginger sideburns. Morris Syndrome is caused by the word 'Morris', making Morris Men and Morris Marina owners more susceptible to infection.
He has a bad case of Morris Syndrome
by Anne Onnymouse February 21, 2011