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A Acronym derived on the MMORPG "Runescape" First used by a player known as Staple,or "Nibo." It means (M)ad (S)ad (B)ad as a flame toward raging players that are considered "Bad" at the game.
l0l why you so msb bro?!
by StapleNibo April 06, 2011
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Golden Shower Plush

He's warmer than you think.

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16
The home to a whole bunch of people.
Including myself, since someone forgot.
by Dante Reborn February 14, 2004
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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17
This is the definition reffered to by me under ZSB. The sharer of the abrreviation "MSB." Secluded from the rest of GameFAQs (Due to a link axe)

NOTE: The Mario Social Board is actually the Mario Games Social Board... However, MGSB is taken by the Metal Gear Social Board... >_<
Rangnarok0387, VenomFang3001, lexichanw00t, Black Abyss/The Black Wanderer, Blaze12, DaChampion/The Almight Smithy/Mind/Rethink/Champ, Koran Rag, IceBlade, MechaShadow, CMDR Reservoir, NeonDragon9000, ResidentEvilMaster, and deku stick puppet are all vets.
by Kakashi 11235 December 30, 2003
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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18
The Mario Social Board of GameFaqs. It's home to users like Linking12, Sunny the Armadillo, Gleaso, Marono, Blinkandcandy, Mario99, Flamecube, Icemonkeypro, Hermitua, Darkfusion, Gigagigagigabowser, Fastfido, Pheduik, BRJ, ZB3000, Crocomire, and many many others.
Did you hear that the MSB is gonna survive?
by Sunny the Armadillo December 29, 2003
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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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19
nah!! my definition of msb is 2 cool to b on the 'net sorry!
she's a total msb!!
by denisse June 14, 2004
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Donkey Punch Plush

10" high plush doll.

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20
<text message> Hey Sexy, This is your daily MSB...<explicit ideas imagined>
by bsd2424 September 18, 2009
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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21
short for 'Massive Sperm Buildup' - usually occours in young male adults under 25 as a result of no sexual activity for more than a week or 2
Derek had not masturbated for about 3 weeks and was suffering from a severe case of MSB, but after watching 5 minutes of crazy cumshots #4 he had a massive sperm bomb and had to use his blue bandanna to clean up!
by Cam Bomb February 19, 2012
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Cleveland Steamer Plush

The vengeful act of crapping on a lover's chest while they sleep.

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