[en] Parallel viscosity in the banana regime in a poloidally (E x B) rotating tokamak plasma is calculated to include the effects of orbit squeezing and to allow the poloidal Mach number, M_p, to have a value of order unity. Here, E is the electric field and B is the magnetic field. The effects of orbit squeezing not only modify the size of the particle orbit, but also change the fraction of the poloidally trapped particles. The resonance between the particle parallel (to B) speed, u, and the poloidal component of the E x B velocity can only occur for those particles with energy (v/v_t)² > M_p². Thus, the resonance parallel plasma viscosity decreases exponentially with M_p² when M_p ≥ 1, as originally noted by [K.C. Shaing, E.C. Crume, Jr., and W.A. Houlberg]. Here, v_t is the thermal speed and v is the particle speed