An amazing girl. She’s smart, funny, really pretty. Her personality is also incredible and she’s a perfect friend but people realize this later. You need to meet someone like her right now or your life will be really bored...
(noun) A special mental condition, normally present since early childhood, in which a subject portrays visible signs of autism but has not been diagnosed with the condition.
It is characterized by great difficulty in learning and communicating with others, severe hyperactivity, unexplained idiocy and/or just being an annoying piece of shit.
May contain traces of nuts.
'Man, that floofer's got ertism.'
'I'm sorry ma'am, your son's been diagnosed with ertism.'
'What a shame, he died from an acute case of ertism.'