Moment in a video in which the part that initially made you click on said video is shown, aka the 'thumbnail part'. Happens most commonly on pornographic videos.
- Sweetheart, aren't you coming down for dinner?
- Get out of my room, grandma! The thumbnail part is coming up!
- Get out of my room, grandma! The thumbnail part is coming up!
by worldwar3 May 25, 2014
Get the thumbnail partmug.