The Crash Syringe is a crafted weapon that can be found randomly across the world. It will instantly flush Joy from one's body and can only be injected into others.
The syringe can only be injected into other citizens, if you get behind an unaware human and you have equipped the Crash Syringe it will show the "Inject" option. The character will then stab him/her with the syringe and yell out "DOWNER!". The person will be crying for a long time and will not care what you do to them. If other citizens notice the person you "Crashed" they will pull out their weapons and possibly kill the affected.
- Crashing is another word refering to the phase of withdrawal from a psychoactive stimulant.