also known as UnMentionables
In a number of websites, the mention of children in any fashion is against the TOS (Terms of Service). However, there are times when someone wishes to discuss facets which involve children, but do so in an acceptable way. The result has been to refer to children as UMs, or UnMentionables. This notation is not used to discuss children as sexual objects or for sexual gratification, but rather in the context of adults who are exploring sex, but have children in their homes.
Example: "My UMs found my vibrator last night. Any suggestions on a better place to hide it?"