Look Ridiculously Practical With This 20% Off Beard King Beard Bib
I also didn't know what a beard bib was, either, but now .
Looks like Beard King may have solved this all the way back in a 2015 episode of Shark Tank with its Beard Bib—a sort of reverse cape that you wrap around your neck and affix to your bathroom mirror to catch all those beard clippings as you go for easy dumping later.