The feeling you get when you are really tired and everything becomes funny.
*listens to lemmings on the run* (lemmings on the run)

HahahahahahahahahahHAAHAH Haahahahahahahaa HOLY SHIT I'M NERPY1
by E-rotic January 22, 2006
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A word created by Markus Persson (Creator of Minecraft) on the day of his marriage to explain the feeling of being happy and nervous at the same time. though meaning entirely different things, this could be a possible add-on to the already rhyming words Herp and Derp. The alternative to this word is the more dislike-able "Harvous"
From Notch's Twitter:

notch Markus Persson
I am nervous and happy. Harvous. (Nerpy?)
by Notch Stalker August 14, 2011
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The resulting burning red rash when you use Nair on your genitals
"I wanted to be smooth as a baby's ass down there but the Nair gave me Nerpies"
by NocturnalNight June 14, 2019
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Noun: a bruise around the nipple inflicted by a bully in the schoolyard, using thumb and forefinger to twist the nipple until the victim screams.
See that little momma's boy, I'm gonna give him such a perpy nerpy his momma will feel it.
by joeyddd August 9, 2007
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Noun: a bruise around the nipple inflicted by a bully in the schoolyard, using thumb and forefinger to twist the nipple until the victim screams.
See that little momma's boy, I'm gonna give him such a perpy nerpy his momma will feel it.
by joeyddd August 7, 2007
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