Identical messages were left on my service for both 281-207-4857 and 281-207-4890. It was a recorded message for a meeting for our alternative high school in the area and that there was an information meeting .
Assuming that they are your parents (first) cousins, then they are your first cousins once removed. Their children will be your second cousins. If you are asking what to call them, then that depends. I always called my parents cousins aunty and uncle... unless they were like my age.
Your first cousin's children are your first cousins once removed. Their children are your first cousins twice removed. It goes both ways, unlike father/son or aunt/niece. They are your 1C1R and you are theirs. If you had a second cousin, his/her children would be your 2C1R and so on.