It happens that, when I encounter colleagues in the hall, I open my mouth to greet them but no sound comes out.  
 
Invariably I over-compensate and, when meeting the next person, greet them explosively as I might imagine an angry Grover or Fred Sanford would do. 
 
I'm considering a new system of hand signals or glottal grunts to pass as hallway platitudes but have not yet settled on a marketing plan.  
 
And so my challenge for these trying days shall be to socialize the grunt. 

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