to be too confident of your own intelligence in a way that annoys other people. (British variant of "too smart by half.")
'Too clever by half' was how one former teacher described him.
to take office supplies for personal use (i.e. to steal)
Joannie needed some extra packing tape for home so the next day at work, she went office shopping.
A person who refuses to vote strategically and casts their ballot for a candidate who has no chance of winning rather than for the viable candidate who most closely represents their views.
Yet again, Yuri is casting his general election ballot today for someone polling at one percent even though he knows that there are only two top contenders. He's the quintessential vanity voter.
VBR stands for "Verify Before Retweeting." Many Twitter users retweet information that is false but convince those who agree with them to believe the false information and they themselves retweet is true, thus leading to further retweeting. VBR is a shorthand way to remind or admonish those who retweet false information that they should verify the information before retweeting it.
Herbert retweeted "Donald Trump has resigned!" Roberta replied "Not true. VBR!"