A large nose nugget made especially hard and sharp from particularly trashy crank or meth, and sometimes, teh cola, usually from being stepped on by a Frankenstein. Crank boogers can be very difficult to dislodge in total, making one work for it like a miner, and making one to exclaim when caught at the herculean chore, "Goddamn crank booger!" so as to raise sympathy for the dirty nose picker.
First guy, "Damn dude, are you diggin' for gold up there?"
Second guy, "Goddamn crank booger!"
First guy, "Ahhh, dude..."