One that decides to sport a Chin-Pube-esq beard. The beard is the full width of the chin and the length is typically 1-5" down in Chin-Pube-esq form. Chewb is the perfect combination of the words to describe a manly type Pubey beard protruding from the face.
"Hey dude, your Chewb is so long!"
"Oh my, did you see that guy that just walked by? His chewb was 3", when is the last time he cut it back?"