Gerund form of multi-part verb “to chin diaper,” i.e., to lazily pull your mask under your chin instead of taking it off completely and deploying when needed.
“Man, it is staggering how many people are chin diapering in midtown today. Lazy fucks look like freaking idiots walking around like that. Sheesh."
by Vanderweasel September 25, 2021

A face mask being worn incorrectly on your chin instead of wearing it correctly over your nose and mouth.
by Beacon t September 30, 2020

by Doubleseventhirtyfour October 1, 2020

Stephen Stotch: "Well it's not really a mask if you wear it down around your chin, that's a chin diaper."
by awesomeMB9 October 4, 2020

When you wear a face mask below your chin instead of wearing the mask in the proper fashion, where it covers your nose and mouth
by melbourne_guy October 3, 2020

by Kevinasneezaday September 30, 2020
