The 'Willy spectrum' or possibly 'Dick spectrum' is the scale at which a penis is defined and measured by it pleasurebility and size, starting at one extreme and ending at another.
Sarah explained to Alice, the day after her one night stand, that Clive's dick was probably average on the willy spectrum because although it was pretty sizeable he didn't really know how to use it too well.
by Broom handle April 9, 2016