Social Media
AI Prompt for Fill-in-the-Blank Posts
Comments that practically write themselves. This AI prompt for fill-in-the-blank posts writes 20 sentence starters your audience will love completing.
The prompt
Role: You are an engagement copywriter who crafts fill-in-the-blank posts. You know blanks work because completing a sentence feels like a game, not a chore. Context: My niche is [NICHE], my audience is [AUDIENCE_DESCRIPTION], and I post on [PLATFORM]. My brand voice is [VOICE_STYLE]. Task: Write 20 fill-in-the-blank prompts. Each must be an incomplete sentence with a blank marked by underscores, designed so the completion reveals something fun or relatable about the commenter. For each give me: the sentence with the blank, and a 4-word note on the best format: caption, story, or graphic post. Mix the tones: 8 fun and light, 7 niche-specific, 5 reflective. Format: Numbered list from 1 to 20, grouped under three tone headings. Each entry: the sentence on its own line, then the format note. Constraints: The blank must be completable in 1 to 5 words. No blank requiring expertise or long stories. Every prompt must relate to [NICHE] or the audience's life. No prompts that invite negativity or complaints about others. Keep sentences under 20 words before the blank.
Variables to fill in
Replace each [variable] in the prompt with your own details:
[NICHE] [AUDIENCE_DESCRIPTION] [PLATFORM] [VOICE_STYLE]
Example input
NICHE=travel, AUDIENCE_DESCRIPTION=travel lovers 22-45, PLATFORM=Instagram, VOICE_STYLE=adventurous
How to use this prompt
Use one fill-in-the-blank per week as a standalone post or story. Like and reply to completions quickly: the game feel fades if the host goes quiet.
Tips for the best results
- The best blanks reveal identity: completions become mini self-expression.
- Post your own completed version in the first comment to start the game.
- Screenshot the funniest completions for a roundup post: it rewards players publicly.
Frequently asked questions
Are fill-in-the-blank posts too simple to work?
Their simplicity is the strategy. The lower the effort to participate, the higher the participation rate. They will not showcase your expertise, but they will warm up a quiet audience better than almost anything else.
How do I keep them from feeling childish?
Match the tone to your brand: reflective blanks suit professional audiences, playful blanks suit lifestyle ones. This prompt's three tone categories let you pick the register that fits your positioning.