Dog turd
Example:
Jim: Hey Joe, how's your headache?
Joe: I went to the doctor as you said and I still have it but now I'm a $200 poorer.
Jim: You idiot, I said Dog Turd and not doctor.
Jim: Hey Joe, how's your headache?
Joe: I went to the doctor as you said and I still have it but now I'm a $200 poorer.
Jim: You idiot, I said Dog Turd and not doctor.