Top Definition
Noun.

1. The innate ability to know when you're "...just too old for this shit". Sometimes spelled "graydar".
My "Greydar" kicked into high gear the moment I pulled into the health club parking lot, so I headed to the bar instead.
by JunosGold September 04, 2011
1 more definition
Picking up the vibe of someone who is boring.
random person talking "yes you see there are many people who just do not take the importance of cement seriously"

someone over hears and gets the greydar alert "Oh no, greydar, greydar!! lets move before we get drawn into this greydar person!!!
by muppet_trm May 11, 2012

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