1. feces; excrement (informal, childish)
Usage: informal; childish; often used by or with young children
2. something worthless or of poor quality; nonsense
Usage: informal; slang

Examples

• The toddler announced, 'I need to go doodoo!'
• That movie was total doodoo.
• Don't step in the dog doodoo on the sidewalk.
• He's been talking doodoo all morning.
• The car broke down again—it's just doodoo.
• Clean up after your pet's doodoo in the yard.