Finger or wave? USA September 12, 2010September 6, 2010 by StreetViewFun.com StreetViewFun.com · 2 comments View Larger Map Please wait... Similar Street View images Finger Wave from Edinburgh Norwegian wave Google Wave The duel wave combo Newfie wave Polish wave
The way in which the arm is vigorously, vertically thrust up suggests it has to be a finger.
Definitely a finger.