Top Definition
A line which is parallel to the ground and just above the highest point of a man's ear which is attached to his head. If his sideburns don't go below this line then he is probably psychotic or at least dangerously stupid.
- We'll be back at around eleven, darling, and Dwayne will be babysitting you till then. If there are any problems at all...
- DWAYNE? Honey, that kid's sideburns are a quarter of an inch above the psycho line. Call the Hamiltons and tell them we're not coming.
by mikeylear August 27, 2008
5 Words related to psycho line

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