harassassin 

A.k.a. "assholeassin". A hired exterminator of fellow humans who brings about the demise of his marks by behaving like such an intolerable jerk that the stressed-out unfortunate eventually commits suicide in order to escape said obnoxious persecution.

One should take care how he treats his fellow humans --- like they say, you never know what battles someone else is fighting, and so some people could be "pushed over the edge" by even minor;y-upsetting actions/attitudes on the part of another. Many a cranky schoolteacher, headmaster, stepmother/mother-in-law, etc. has been a literal harassassin, often without even being aware of it at the time.

harassassin by QuacksO May 6, 2019

harsassing 

Harassing someone but with sass, and often over something dumb.

Hey bro, I’ll call you back as soon as this kid stops harsassing me about how Shane Dawson has ties with the Illuminati.

harsassing by UnkownWolf June 1, 2018

hashAssassins

some Chinese guy gave teenagers reefer to murder people. they were then called hashassins, or as my colleagues like to say it, hashassassins.

Man, those hashAssassins really did that chick in the other night.

hashAssassins by Vivian Esperanza Mondragon March 10, 2008