Can mean that the writer is confused, raising an eyebrow, and/or shocked but not about to say it. See o.O
by Mr. Nozzers April 16, 2005

by Ben McLaky January 11, 2008

A security guard. Derived from 5-0, slang term for a cop. Security guards carry about half the credibility and authority as a regular cop, hence the 2.5.
See also rent-a-cop, mall security.
See also rent-a-cop, mall security.
"Bobby and I were throwing mustard off of the balcony, then some 2.5-0 come by and threatens to calls the cops. Lame"
by JakeStar November 3, 2005

Fucks Given: Zero. Meant to be used when you want to let the person you're talking to you just don't give a fuck.
by Robb37 September 9, 2011

That went 0 to 100 real quick
by wynnebri November 16, 2014
