Noun
Any small, insignificant lap-jumping dog that incessantly barks and yaps painfully loudly at absolutely nothing.
Stereotypical: Like most girls with bejeweled cell phone covers, she does nothing to stop her little puke of a lapyap from annoying everyone in her building.

Mathematical: All chihuahuas are lapyaps. All lapyaps should be suffocated. Therefore, all chihuahuas should be suffocated.
by TheToyer February 29, 2016
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