a person...or thing who:
1-puts up pics no one cares to see
2-tags people in those "tag yourself" things!
3-updates status every 5 minutes, no one cares that your eating yogurt watching jersey shore re-runs
4-you would look up this word to check if you fall under this category
guy 1-dude my dreams called me facebook trash last night...
guy 2- duuude thats harsh! and its a little gay that your talking bout your dreams.