I am also very tired of the ridiculous trolling of youtube thumbnails with the:
"Shhh, dont tell anyone because it's a secret, index finger on the lips."
or the
"Stop!! Don't buy this before you watch this vid."
or the
"This new feature is INSANE!!!!!"
or the
"Fist to mouth grimace OMG pose."
or the
"Wow!! How is this product or feature free/possible/legal/allowed/permitted??"
or the
"You need this product/feature or else you will most definetly never become the accomplished mixer/producer/engineer/artist/musician pitch"
or the
"Useless finger pointing to the pasted thubmnail image of the product in the top right corner because you would not have been able to see it otherwise gesture."
or the
"This plugin changes everything but i won't tell you what it is so you'll have to watch the video before you'll know if it is even relevent tactic."
... ad nauseam.