  We discuss a mechanism for the apparently universal scaling in the
high-multiplicity tail of charged particle distributions for high energy
nuclear collisions. We argue that this scaling behavior originates from rare
fluctuations of the nucleon density. We discuss a pair of simple models of
proton shape fluctuations. A "fat" proton with a size of 3 fm occurs with
observable frequency. In light of this result, collective flow behavior in the
ensuing nuclear interaction seems feasible. We discuss the influence of these
models on the large $x$ structure of the proton and the likely influences on
the distribution of initial state spatial eccentricities $\epsilon_{n}$.
