1. the act of deliberately appearing in someone else's photograph without permission, typically in a humorous or mischievous way
Usage: informal; often used in social media and casual contexts

1. to appear in someone else's photograph without permission, usually to be funny or disruptive
Usage: informal; present participle or gerund form of photobomb

Examples

• The celebrity was caught photobombing a tourist's selfie at the airport.
• My friend ruined the family photo by photobombing with a silly face.
• Photobombing has become a popular prank on social media.
• He couldn't resist photobombing the wedding pictures in the background.
• The dog was photobombing every picture we tried to take in the park.
• She got in trouble for photobombing the school yearbook photos.