"Toss one's cookies" is an informal phrase that means to vomit. Fortunately, for those who don't want to use this phrase, there are a variety of synonyms available. Some common alternatives include "throw up", "puke", "barf", "hurl", "spew", and "regurgitate". More polite options include "become nauseous", "experience stomach upset", or "lose one's lunch". It's important to note that while these phrases may be less offensive or crude, they still refer to the act of vomiting and may not be appropriate for all audiences. As always, it's important to consider your context and choose your language accordingly.