suicidal by crack cocaine

someone who uses crack that becomes suicidal.

A (sometimes) unavoidable traffic situation whereupon a random crackhead wonders in front of one's vehicle causing a an accidental collision (one version of a crackcident)--a collision between a driver and a crackhead, possibly resulting in the injury/death of the aforementioned crackhead and definite damage to one's bumper and/or windshield.