The phrase "tost one's cookies" is a colloquial expression that refers to the act of vomiting or experiencing severe nausea. The word "tost" is an alternate spelling of "tossed," which means to throw or to cast forcefully. The term "cookies" is used figuratively to represent the contents of one's stomach, likening them to small baked treats.
When someone says they have "tost their cookies," it implies that they have regurgitated the contents of their stomach either due to illness, excessive alcohol consumption, or other bodily discomforts. This expression is often used in informal or slang contexts, and it conveys a sense of unpleasantness or discomfort associated with nausea or vomiting.
The phrase can be traced back to American English slang in the early 20th century. It has since become a popular idiomatic expression used to describe the act of getting sick or having an upset stomach. The use of "tost one's cookies" is generally considered informal and may be considered vulgar or impolite in more formal settings.
Overall, "tost one's cookies" is a colorful colloquial phrase that vividly describes the act of vomiting or feeling nauseous. It effectively conveys a sense of discomfort associated with regurgitation or an upset stomach.