I am wondering here if you mean Feiffer.
Feiffer, who gave us Munro along with other characters, is a talent who I recall mostly from his work at the Village Voice. His cartoons there always gave me a bit of a chuckle.
You're right - and how did I do that> mind fart. I do that sometimes with soundalike words and don't notice myself doing it, including when I know better, which I almost always do.