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Used to tell another officer to stop transmitting and change channels, usually to one more secure.
Person one: 10 3, go to uhf secure, over.

Person two: Roger that.
by Solja May 07, 2006
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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when a kid could not guard the person in basketball in score on him in took his ankles
Hey, 10-3 BIATCH
by AntKiiDD May 23, 2019
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Said when two people say the same sentence simultaneously.

If then one says 103 and the other cannot speak until someone calls him/her by name.

At least that's how it's used in Hungarian.
A: That guy is handsome.
B: Aww how cute!

A: 103!
B: ...
by JΓ©ger Fanni March 09, 2006
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The score of the Stratford v. Memorial Varsity Football game, signifying the end of an age and the beginning of the Apocalypse. Often used to mock the uglies, aka Memorial Mustangs.
by The Minority January 04, 2004
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to bust on a sandcastle
originated from the native americans
a form of entertainment if the sandcastle falls you automatically win
by my nuts August 12, 2004
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Ryan|Eagles. 'nough said.
Did you see Ryan|Eagle's 10.3? Yeah man it definitely ruined Ke$ha
by Kipz May 28, 2010
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