throw off on
v. phr.— «Throw-off on. To disparage, bring into ill repute. “He threw off onme when he said I didn’t know enough to come in out of a shower of rain.” Lower south.» —by Harry Harrison Kroll in George Peabody College for Teachers A Comparative Study of Upper and Lower Southern Folk Speech (Martin, Tennesee) Aug., 1925. (source: Double-Tongued Dictionary)