Top definition
n. Soiling of the back with feces, typically used in the context of an infant who has overfilled a diaper while supine. May be considered a variant of code brown.
Mom: Sweetie, can you change the baby? He has backpoo.
Dad: Sure, hon. That's a whole outfit change he'll be wanting.
by D@d June 06, 2007
Get the mug
Get a backpoo mug for your mama Beatrix.