Thumb nail guy 

Youtube got hacked on 26th of December, most of this 'thumb nails' which are little pictures that show a part of the movie got changed in to this person named 'Damo Suzuki'. A hacker changed the thumb nails into his picture. And therefor people are calling Damo Suzuki the '' Thumb nail guy ''

Lolguy: Hey did you see all those thumb nails on Youtube?
Lolguy2: Oh do you mean the thumb nail guy?

Thumb nail guy by Roku December 28, 2009

Long thumb nail 

somebody who has normal nails apart from the thumbs, the thumb nails are like a bitch's, reet long and gayish

Matthew Hyett's long thumb nails

Long thumb nail by Sleepy_Recluse August 26, 2013

Long Thumb Nails 

Used to help roll joints, blunts, or leaves. Typically stoners or people who roll tobacco have long nails.

My nigga got some long thumb nails

Long Thumb Nails by SolidifyBad March 31, 2021

thumbnailed 

When someone looks good in a thumbnail picture, and you click on it only to find out they don't look nearly as good in the full picture, you've just been thumbnailed.

"Ooh, she looks hot."
*click*
"Dammit! Thumbnailed again!"

thumbnailed by ibbit June 28, 2009

Thumbnail 

The cover photo for a YouTube video. Usually to get your attention or show what the video is about.

Put boobs in the thumbnail to get more views dude!

Thumbnail by TheRedBeanie__ July 20, 2016

Thumbnail Syndrome 

The phenomenon in which someone seems far more attractive in the thumbnail version of a profile picture than they truly are.

I thought the girl who sent me a friend request was hot, but it turned out to be a case of Thumbnail Syndrome.

Thumbnail Syndrome by Ken_II July 27, 2009

Thumbnail Hot

When someone looks like they might be attractive in their Facebook or Twitter thumbnail until you click on it and find out that they're really not.

"Yeah, at first I thought he was really hot but turns out he was only thumbnail hot."

Thumbnail Hot by jeatags March 31, 2009