What is a sandpipers cousin?

Your cousin certainly has cousins to whom you are related. But your cousin can also have cousins to whom you are not related.

Not necessarily. First cousins have grandparents in common, where second cousins have great-grandparents in common. Your cousin will have cousins who are also your cousins (first, second, removed of...

your aunt and uncle's children .your aunt and uncle are related to you which makes your cousins related to you.

Asking about your second cousin's cousin's cousin is asking about a complex but poorly defined relationship. Are the cousins of the second cousin his first cousin, second cousin, fifth cousin twice...

Let's call your cousin's husband's cousin Joe. Joe is your third cousin only if you and Joe have a great great grandparent in common.