A person who robs drunk people (out on the streets where the drunk bar people walk around at night).
"Man I can hardly walk straight lets take this alley as a shortcut to the next bar." "Dude, what the fuck man, that bum just jacked my slice of pizza" "Oh shit he just knifed me and then took my wallet!"
- "That pig fucking jackroller !!"
Hey! That jack roller just gutted my car and stabbed me with a broken beer bottle!