Top Definition
The 1st Rule Of Tumblr Is, Your Facebook Friends Should Never Know About Your Tumblr
Person A: "Dude My Fb Friends Keep Postin Dumb Shit All Over My Dashboard."
Person B: "Dude, 1st Rule Of Tumblr"

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×