Dullard

A dullard is a derogatory term used in internet slang to describe someone who is perceived as unintelligent, boring, or lacking in creativity. It is often used as an insult to belittle or mock someone’s lack of intelligence or originality. It signifies a person who lacks excitement or interesting qualities.

Examples:
1. John’s presentation at work was so dull and unoriginal. He’s such a dullard.
2. Sarah’s Instagram posts are always the same, just selfies and food pictures with no captions. She’s such a social media dullard.