go Dutch

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Going Dutch

Wikipedia

A derivative of Dutch treat, from Dutch (“poor imitation; ersatz”), a derogatory term originally referring generically to German-speaking peoples as a whole; first attested 1914.^[1]

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go Dutch (third-person singular simple present goes Dutch, present participle going Dutch, simple past went Dutch, past participle gone Dutch)

1. (idiomatic, informal, slang) To pay for one's own food and bills, or split the cost, when eating at a restaurant or going out for entertainment.
   • 1958, Evelyn Ruth (Millis) Duvall, The Art of Dating, Associated Press, p. 138:

     GOING DUTCH Some girls are quite willing to pay part of the expenses on special dates. When something is planned which is beyond the boy's means. . . .

   • 2005, Rex Reed, reviewing De-Lovely in Mews Items: Amazing But True Cat Stories, by Allan Zullo and Mara Bovsun, p. 193:

     Ashley Olsen may be a teenage zillionaire, but when she's out on the town with pals, she goes dutch.

• Dutch treat
• go halves