The word "cums" is a slang term for orgasm. There are many synonyms for this word, including climax, bliss, ecstasy, release, culmination, and peak. Other options include the phrase "reaching the finish line," or the act of "peaking." There are also more vulgar terms that some people may choose to use, such as "screwing your brains out" or "getting off." However, it's important to remember that sexual language is personal and can be sensitive. It's always better to use language that is respectful and appropriate for the situation.