Slang for "period" (menstruation) includes a variety of euphemisms. According to the provided reference, here are some examples:
- Aunt Flo/Aunt Flow/Aunt
- Time of the month/TOM/That time of the month
- On the rags/rag/ragging
- Red tide/river/sea/moon/light/army/curse/days/dot
These are just a few examples, and slang terms can vary by region and social group.