The phrase don’t worry, it’ll be a pig’s foot in the morning is meant to comfort or reassure a child who’s stubbed her toe or scraped her knee or suffered some other minor injury. This expression is especially common in...
boo-boo face n. a pout or pouty facial expression; moue; boo-boo lip, an out-thrust lip. Editorial Note: Probably from the facial expression children make when they have a boo-boo ‘minor injury.’ (source: Double-Tongued Dictionary)