Slothitis is temporarily contagious; the monotonous rant of a slothitis sufferer will often force the listener to adopt the symptoms of a sloth man e.g. drowsiness and lethargy however once out of contact with a slothitis sufferer a healthy human's immune system will repel the slothitis - the diseased cells are two slow to cause long term effect.
Slothitis is a degenerative disease and the sloth man will slowly develop a likeness to John Squires of the Stone Roses, their voice will heavily deepen and their deep monotonous speech will enable them to communicate with whales. Generally a slothitis sufferer from birth will die before reaching the age of thirty as they can no longer feed themselves however the disease can lie dorment and effect people at later ages.
Davey (slothitis carrier): 'I was eating my dinner and had to straighten my hair'
Normal Person: 'I hate you Sloth Man'
Davey (slothitis carrier): 'No no no'
Whale: 'Hellooooooo Davey'
2. a man who exhibits disinclination to action or labor