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The term, taken from the widely known "pathological liar", is used to describe all those of an Indian race who, for some reason, still believe lying is morally acceptable. Because of this they lie all the time and are therefor pathological liars. To specify that the person's race is Indian, the common Indian surname "Patel" is used.
Person A: Have you met Niral? He said he's adopted.

Person B: Yeah, dude, that isn't true. He's a Patelogical liar.
by better_thanrevenge September 03, 2014
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