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1.
RSN
Acronym for "Real Soon Now". Often used as a sarcastic remark to describe something that's late.
Microsoft promises Windows stability RSN.
by The Grammar Nazi January 10, 2002
 
2.
rsn
Runescape Name
Bob: Hey dude wanna play today?
Jon: Sure what's your rsn?
by Zigzagzap February 24, 2009
 
3.
rsn
(a weiner who practically lives for the computer game)
A term used to describe someone who OVER-uses RuneScape and continuously talks about it.
"Omg! You're still on you rsn"!

<Rsn>"Come meet me at lvl 49 wildy and we'll go pking"
<Me>"No, shutup you fucking rsn"
by C a i t _ ? October 08, 2006
 
4.
rsn
RuneScape Nerd.

(nerd who practically lives for the computer game)
A term used to describe someone who OVER-uses RuneScape and continuously talks about it.

"Omg! You're still on you rsn"!

<Rsn>"Check out my full dragon, obby shield and fire cape =)"
<Me>"Shutup you fucking rsn"
by C a i t _ ? October 07, 2006
 
5.
RSN
Acronym for Red Sox Nation, a human sub-species single-mindedly obsessed with all things concerning the Boston Red Sox. May display odd behavior such as camping out all night in the rain for opening day tickets, chanting "yankees suck" at a game between the Red Sox an opponent other than the Yankees, and/or sputtering into angry convulsions upon hearing the name "Grady Little."

Strengths: team loyalty, blind faith and snow shoveling prowess
Weakness: wicked bad driving manners
That RSN fool just sold his first-born child for season tickets.
by bostonpup August 31, 2005