"Pleb" is a term that got popular some years back, largely represented by people like Hodlonaut, but not exclusively. Kinda means die hard bitcoiner who's not rich or technical, but is a real soldier. That type of thing. Taco Pleb was a chat group in same vein on telegram, with notable members like Deater Bob (another reference you may not get if you weren't on X a ton back in the day).