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. when you think a girl is hot from the thumbnail of her profile picture, but upon further investigation, you find she is a slampig.
"Why didn't you smash last night, this girl looks hot"
"No click on her profile, it's just the thumbnail effect. She's gross."
"No click on her profile, it's just the thumbnail effect. She's gross."
by Ladybuttpants February 11, 2015
Get the Thumbnail effectmug.