If your 18 and high school are you allow to cuss?

Whether or not an 18-year-old is "allowed" to cuss depends entirely on the context. Legally, there's no law preventing an 18-year-old from using curse words. However, their environment might have rules against it. For example:

* School: Most high schools have codes of conduct that prohibit swearing, even if the student is 18. Violating this could lead to disciplinary action.

* Workplace: Similar to school, many workplaces have policies against using profanity.

* Social situations: The acceptability of cursing varies greatly depending on the social group and situation. What's acceptable among friends might be highly inappropriate in a professional setting or with family.

So, while there's no legal restriction on an 18-year-old cursing, the social and contextual appropriateness is crucial.