Slap my knee and call me pickle

An expression of enlightenment and revelation concerning information that was previously unknown.

Sam and J rode down highway 81 to the honky tonk bar. A Wheeler Walker Jr. song played over the truck radio - Eatin Pussy, Kickin Ass.
Sam looked at J. Her eyes glistened with regret.

"J, we have a situation," Sam said.
"What happened?"
"I seem to have shit my pants, J"
"Well slap my knee and call me pickle, Sam," J muttered. "I'm turnin' this truck around baby."