Merciless

pitiless,

cruel, 

heartless, 

hard-hearted, 

cold-hearted, 

cold-blooded, 

harsh, 

callous, 

unmerciful, 

unforgiving, 

uncaring, 

unsympathetic, 

uncharitable; 

remorseless,

unbending, 

inflexible,

implacable; 

brutal, 

inhuman, 

inhumane, 

barbarous, 

barbaric, 

savage, 

sadistic, 

vicious.

I can hear people already, "Don't be a dick."

I'm not...yet.

How about?

Don't give me a reason to be one?

How bout we go that route?