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1.
1) A little button on Facebook used to express a positive response about someone's status, picture, video, link or pretty much anything else a person does.

2) The same button can also be used sarcastically.

Note: It is not dissimilar to the little "Thumbs-Up" picture next to each definition on Urban Dictionary.
1) Ash: "I just bought myself a new phone! :)" (23 minutes ago)
*you click on Like Button*
You like this.

2) Ash: "I just lost my phone! :(" (3 minutes ago)
*click on it again*
You and 7 others like this.
by SpecialCookies April 06, 2010
37 9
 
2.
An annoying feature in Facebook that allows people to positively acknowledge a post, image, or video without actually engaging in any form of meaningful conversation or dialogue.
Person #1's Facebook status update: "Man, I wish people would take the time to actually post meaningful comments on the stuff I post instead of just pressing the Like Button"

Person #2 and 3 others like this

Person #1: "God dammit!"
by anonnnnymous12344235 January 04, 2010
23 8
 
3.
clits
she really enjoys when you touch her 'like' button
by thedollardrafts April 15, 2011
2 2