Oneironaut I fucking love anarchist smokers, property is theft man!
Yeah carbs are cool but they come in variety of forms.
Mostly on spoons rarely on chillums, carbs build up a cloud a smoke to rush into your lung with oxygen creating a better easier hit and a more efficient piece.
Called rush's shotguns carbs carborators, whatever works.
On some bongs the carbs are called slides. This is where the carb is a removable bowl inside a tube. The slides act as carbs but are often interchangable between bongs.
(i really love slides)
;)