Sonic Throat

the moment when someone’s oral performance reaches maximum efficiency, much like the narrowest point of a nozzle in thermodynamics, where compressible flow hits Mach 1. Just as no further increase in upstream pressure can accelerate the flow beyond the sonic point, the recipient might feel they’ve reached the "maximum capacity" of pleasure, with all systems operating at peak thermodynamic intensity

Will's mother has been known to give 'Sonic Throat' in the morning.