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8.
(verb) To solicit conversation with another man while standing at a urinal, on any pretext, not necessarily sexual. For instance, friendly banter in a public house toilet or 'talking shop' in workplace bathroom. Usually an unwanted intrusion while passing water.
"Hey Dave, do you need extra time on that Kenton report?"
"Yeah, I discussed it with Marty - I just Rhubarbed him in the bathroom. His wife is a lucky woman"
by Reverend Tremendous Embakwame August 09, 2007
8 10
 
1.
Complete and utter bollocks.
"Stop talking rhubarb"
by oracle March 12, 2004
93 28
 
2.
Plant typically found growing wild in the City of Ann Arbor, Michigan.
"Dude, my Abercrombie shirt just fell off the porch and into that patch of rhubarb. Fucking REFS!!!"
by Severance June 13, 2006
60 32
 
3.
A dispute or fight in baseball, often escalating to a bench-clearing brawl.

Also can refer to the aftermath of a bad call from an umpire.

A fracas.
Zim got caught up in that rhubarb last night; I always knew he had a plate in his head.
by Joe Bone March 11, 2005
26 17
 
4.
1. A plant with stalks that can only be eaten after being sweetened and cooked and often eaten with other things anyway. Many people have heard of it but never seen it before.
A rhubarb pie actually has more strawberries than rhubarbs.
by DW May 28, 2004
18 14
 
5.
adjective. Melancholic frustration or sadness associated with the apparent helplessness and inescapability of repetitive or redundant tasks.
"Man, I've been feeling pretty rhubarb about school lately."

"Did you hear Bill got a new job as the guy who puts erasers on pencils?" "Yeah, I hear he's been pretty rhubarb about the whole thing."
by smileyface April 10, 2008
21 18
 
6.
a) A euphemistic way for calling someone a retard.
b) One who is severely retarded.
Did you hear about my roommate? He thinks letting a pizza sit means leaving it in the oven for longer. Man, that guy is such a rhubarb.
by diebearenjuden September 25, 2010
6 5
 
7.
a food that people like to eat with custard
what are we having for dessert, ma?
oh, um, how about rhubarb and custard?
yummy!
by +*+*+*+*+ August 09, 2007
5 7