Meanings
nounguinea pig night (plural guinea pig nights)
plural guinea pig nights
- Northern EnglandcolloquialhumorousThe opening night of a travelling funfair at a new location, sometimes accompanied by a discount or deal.
Origin
From guinea pig + night, implying that the patrons are being used as guinea pigs to test the newly-assembled rides.
Full word history & related roots →Cite this entry
APA
guinea pig night. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/guinea%20pig%20night
MLA
“guinea pig night.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/guinea%20pig%20night. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “guinea pig night,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/guinea%20pig%20night.
Source: guinea pig night on Wiktionary, CC BY-SA 4.0.