1. sperg - Noun
2. sperg - Verb
(slang, derogatory, offensive, sometimes reclaimed) An Aspergerian: a person with Asperger's syndrome.
(slang, derogatory, offensive) A person who displays awkward, pedantic, or obsessive behavior stereotypically associated with Asperger's syndrome.
(intransitive, slang, derogatory) To have a tantrum or fit of rage.
Synonym: spaz
(intransitive, slang, derogatory, sometimes reclaimed) To ramble in excessive detail, as someone with Asperger's syndrome would stereotypically do.
Source: en.wiktionary.org