nerfherder UK /ˈnɜːfˌhɜːdə/US /ˈnɝfˌhɝːdɚ/ noun1 •(slang, offensive) A term of abuse.How can you think that loser has anything od^([sic]) value to say? He's a misinformed, slimey looking nerfherder, which doesn't belong anywhere on that side of a camera. — 2000 formsnerfherders