Drunk beyond words; to be in a state of utter drunkeness.
I feel like drinking, let's get totally bostered!
by Dille March 03, 2010
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Describes something as surpassing the expected. Same definition as bostin, only it can be used in a different style. Used mostly in Birmingham area.
"That balti last night was a right boster!"

"Blues beating the villa is always a boster"
by mattclarke83 May 16, 2005
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Verb. When a person is both bothering you and bossing you around they are said to be bostering.

The word is derived from the contraction of these two characteristics. Originally used as a mode by which attractive, cute women could steal an extra half hour in bed.
M: You need to get out of bed right now!
L: Stop bostering me... *roll over* *snore*
by MCBW March 03, 2012
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Term for someone else doing your job and screws it up.
God Damnit, Travis did a total Boster Sauce and jacked this all up.
by obpidaho November 04, 2010
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