E-roach

A cannabis/hemp cartridge (aka dank tank, dab pen, weed cart, etc) with just a slither of concentrated oil left at the bottom (about a hit or so left)

Person 1: Hey, could I try out one of your dab pens?

Person 2: I can't this time. I'm broke and only gotta these E-roaches to hold me over until Bobby pays me back so I can buy more.

Person 1: Dang it, Bobby.