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1.
An idiom referring to a very short period of time, typically no longer than a week-and-a-half. Owes its origins to the Season 3 episode of How I Met Your Mother, "Sandcastles in the Sand," in which it's said that "summer in Canada is basically the last week in July."

Synonymous with the oft-used baseball idiom cup of coffee and typically used as its hockey counterpart. Also synonymous with a New York minute.
George O'Leary spent a Canadian summer as the head coach of the Notre Dame Fighting Irish, resigning only five days after being hired.
by StrictBiz April 09, 2013