A rare yet deleterious medical condition in which the sufferer is under severe stress due to trying to fit in with the flock (become popular) and as a result is unable to get one's sheep to the top of the mountain. Common in males ages 20-30.
Ron was so stressed trying to fit in with the lads that when he eventually got a girl home he got Shepherd's Syndrome and had to sleep alone.
by Rorysmith March 12, 2012