hasshole

a person or task requiring an unjustified amount of work and attention. Usually in the work place when referring to a client, co-worker or boss.

When used in conversation, the word stealthily sounds like hassle.

Co-worker: My boss just made me pull all the client files from last year and re-file them in chronological order rather than alphabetical.
Me: What a hasshole.
Co-Worker: Yeah, tell me about it...wait, what?
Me: Don't worry about it. Can you get me the Alvarez file from last year?