To engage in Starbucks related activities.
Or to go to Starbucks.
Mill: What are you doing today?

J Dubb: I'm gonna buck it up.

Mill: Oh thas real. Can I come? I want to get a White Chocolate Mocha Frappacino.

J Dubb: Yee. Let's dip.
by Josh a.k.a J Dubb October 27, 2007
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To destroy a once-great television show through poor creative decisions
"After Scott Buck took over as showrunner of Dexter, he began Bucking it up."

"Did you see the last season of Dexter? Scott Buck and his team Bucked it up good."

"In all his work on the X-Files and Breaking Bad, not once did Vince Gilligan Buck up."
by brilliFAN September 25, 2013
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To rise to a challenge, to do something others are unable to
"You need to Buck Up and get back on that horse."
"Buck Up and go talk to her."
by DonJuanBurrito August 21, 2005
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Buck up means to basically grin and bear it, kinda like sayin "get over it" only more nicely. It's especially used in the south and often in small towns.
Mark was complainin about the rain ruinin the huntin trip and his dad said "it'll be ok, just buck up"
by libbylee2487 April 24, 2005
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To be really happy about something.
Girl, you too bucked up that he called you last night.
by Marshika February 1, 2006
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It means 2 cheer up, get ur self 2gether, stay up.
They stole the ducter sir!!!
Buck up bart buck up.
Tha movie How high-
by LiL'Nappy Jones(LNJ) February 27, 2005
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