The expression is akin to once bitten twice shy.
The nephews of your first cousin once removed, like the children of your first cousin once removed, are your first cousins twice removed.
The child of your first cousin, once removed, is your first cousin, twice removed, if your first cousin once removed is the child of your first cousin. If your first cousin once removed in the first cousin of one of your parents, the child is your second cousin.
A cousin of the first degree would be a first cousin, a first cousin, once removed, twice removed, etc., etc.
There are two ways you can have a first cousin, once removed.If your first cousin, once removed, is the first cousin of one of your parents, then the daughter is your second cousin.If your first cousin, once removed, is the child of your first cousin, then the daughter is your first cousin, twice removed.
Your parent's first cousin is your first cousin, once removed. Your parent's first cousin, once removed is your first cousin, twice removed. Your parent's second cousin is your second cousin, once removed. Your parent's second cousin, once removed is your second cousin, twice removed.
The son of your First Cousin Once Removed, is your First Cousin Twice Removed.
The child of your first cousin, once removed, is your first cousin, twice removed.
The daughter of your first cousin once removed is your first cousin twice removed, or your second cousin, depending on which generation your are in compared to your first cousin once removed.
Your grandmother's second cousin is also your second cousin, but twice removed. The twice removed means the number of generations between you. Your mother's first cousin is your first cousin once removed. If your mother's first cousin has children, they are your second cousins.
The children of your first cousin once removed are your first cousins, twice removed, or they are your second cousins, depending. The children of your second cousin once removed are your second cousins, twice removed, or they are your third cousins, depending.
If your first cousin once removed is your parent's first cousin, then your first cousin once removed is your child's first cousin twice removed.If your first cousin once removed is the child of your first cousin, then your first cousin once removed is your child's second cousin.
Your mother's second cousin twice removed is either your third cousin once removed or your second cousin three times removed. Which it is depends on whether the second cousin twice removed is the grandchild of your mother's second cousin or the grandparent of her fourth cousin.