A website that you can make, watch, comment, and like videos. It can also ruin your life
Example 1
Becky: Did you see my new YouTube video?
Jessica: Yes! I liked it.

Example 2:

Becky: YOUTUBE RUINED MY LIFE
Jessica: You okay?
by YoutubeAddict April 07, 2015
An enormous video sharing service for adverts. Also hosts a few user generated videos.
I had to install adblock before I was able to watch a 10 second video on YouTube without first watching a 30 second ad.
by thatheavymetalgoat November 22, 2014
Wasting your life three minutes at a time.
" Dude I thought you had class at three what happened? "
" Youtube. "
by Raingirl67 November 13, 2014
1. A website with millions of videos to browse with anything and everything except porn
2. To search for a video on youtube
Person 1: Did you see "Guy plays risk with his cat?"
Person 2:No
Person 1: Ok,go youtube it
by domn8r April 30, 2009
Great source of music videos, but in common with the rest of the internet it is clogged to fuck with valueless self-indulgent crap posted by moronic teens. Youtube comments are great fun to troll due to lack of moderation and proliferation of easily-offended fanboys.
Typical Youtube comment thread:

*1*bunnybabygrrl*1*: WORD UP I LUV DIS VID MARY KATE IZ THE BAlLLZ LOL shE LOOKS SO PRITI WEN SHE SiNGZ LOL i WANT TO B HER luv U 4 EVA MK :):):)LOL

anusreaper88: i rape cats

*1*bunnybabygrrl*1*: OMG U SIK FUCK1!!!!!!!!1111

dismalobsessive: You will pay for your mockery. I know where you live. Prepare to die slow FAGGOT!

(continues ad nauseam)
by Lord Grimcock August 27, 2008
A site where you can upload your own videos and watch other peoples. Like MTV but you can choose what music you want, or just watch something random. Also full of homemade music videos, and films made for fun or to promote new film makers.
It's MUCH BETTER than television and provides a way to experience "media" without everything being controlled by "Them" (i.e. government, big business, and Rupert Murdoch.)
Let's face it, television is mostly abject propaganda, and YouTube is a way for real people to talk about things that matter, not what The Corporation want you to watch. Also of course you can watch fights, car crashes, and people doing stupid things, comedy animals, rants, documentaries about 9/11 being an inside job, etc etc, and indeed etc.
The big mystery of YouTube is - how come there isnt any Porn on it? Surely they can't watch everything that's uploaded? It's a mystery and I want answers! Luckilyu there is also such a thing as pornotube.
YouTube could become the replacement for television one day.
Sean Bedlam is pretty amusing too sometimes.
by Bob Beefhole March 08, 2007
A site where people post videos. If you don't know what it is, please go evaluate your life.
Girl 1: OMG HE'S SO HOT!

Girl 2: Who is he?

Girl 1: He's posts videos on YouTube! EEEK!!

Girl 2: YouTube...?

Girl 1: OMG. GET OUT OF MY FACE PEASANT!
by RozalynDillon August 24, 2013

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