See quotation.
1848. Ive been on it [the rock] as often as Ive got fingers and toes.W. T. Thompson, Major Joness Sketches of Travel, p. 146 (Phila.).
1888. This phrase is rarely met with; but, forty years after the above quotation, a woman at Whatcom on Puget Sound said to the compiler, I could have rented that house in the past three months as often as theres fingers and toes on me.