what does "smell like a roastin' ear. A roastin' ear in the sun"mean?
"Hey, Ma, Flag'll soon be a yearlin'. Won't he be purty, Ma, with leetle ol' horns? Won't his horns be purty?"
"He'd not look purty to me did he have a crown on. And angel's wings."
He followed her to cajole her. She sat down to look over the dried cow-peas in the pan. He rubbed his nose over the down of her cheek. He liked the furry feel of it.
"Ma, you smell like a roastin' ear. A roastin' ear in the sun."
"Oh git along. I been mixin' cornbread."

Question

what does "smell like a roastin' ear. A roastin' ear in the sun"mean?
"Hey, Ma, Flag'll soon be a yearlin'. Won't he be purty, Ma, with leetle ol' horns? Won't his horns be purty?" 
"He'd not look purty to me did he have a crown on. And angel's wings." 
He followed her to cajole her. She sat down to look over the dried cow-peas in the pan. He rubbed his nose over the down of her cheek. He liked the furry feel of it. 
"Ma, you smell like a roastin' ear. A roastin' ear in the sun." 
"Oh git along. I been mixin' cornbread."

Answer

I've never seen this expression, but since the reply is "I been mixing cornbread" I would guess that he means an ear of corn.

Answer

I'm impressed by the fact that you are able to understand this dialectical English.  Congratulations.