Probably your niece-in-law.
If by "your nan's sister's son" you mean "your mother's sister's son", he is your 1st cousin.
However, "Nan" is often short for Nanna, meaning grandmother. Your grandmother's sister's son is your parent's first cousin and your first cousin, once removed.
Well if she is your father's sister then that makes her your Aunt. Then if your Aunt has kids that makes her kids your cousins.
Les Nans's population is 83.
The area of Les Nans is 8,050,000.000000001 square meters.
Nans-les-Pins's population is 3,961.
im attracted to my nans feet
Uncle or Auntie.
The population of Nans-sous-Sainte-Anne is 145.
The area of Nans-les-Pins is 47.99 square kilometers.
Your sister's son is your nephew and you are his aunt (if you are female) or his uncle (if you are male.
The area of Nans-sous-Sainte-Anne is 8,860,000.0 square meters.
Your sister's son is your nephew.
No, making your son wear his sisters pants is not a good punishment.