Do you participate? I know this is a "thing" but it usually takes a few minutes to register when you see those normally clean shaven people at the end of the month looking like they are trying out for the new "Grizzly Adams".
My wife knows how to get me to shave. All she has to say is "There is grey coming in' on the beard! Longest I went was about 3 weeks as we were going to do a , um, job where to fit it we were to have as much stubble/beard as we could.I've had a goatee for as long as I remember. Going shaveless in November is something my wife constantly complains about so instead of trying to explain that to her while she b*tches and moans about it, I just shave.