Rule34https://rule34.xxx/index.php?page=atom&tags=1boy 1girls 2018 2d arms behind head artist request bad grammar closed eyes dialog dialogue disembodied penis english english text female female focus female frisk female human frisk au human humanoid male male/female naked nude red penis sex solo focus straight tagme tagme (artist) text text box underfell underfell frisk underfell sans undertale (series) undertale fanfiction unseen male unseen male face vaginal penetration white background2024-05-05T21:00:36ZRule34