(lat ;- drummous speediupious)
Symptom - Drummer cannot keep time , speeds up until by end of song singer can't fit all words in.
Cure - There is no cure, can be alleviated somewhat by starting songs at a slow pace, theory being that around the middle it will be at roughly the correct tempo.
This condition can be very useful for playing "Hava Nagila", especially if drummer does not know it's actually supposed to speed up. If he does, well good luck come the last verse.