Answer:
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
What language does a billboard speak?
You use a knife to slice my head and weep beside me when I am dead.
You do not want me when you donβt have me but when you have me you don't want to lose me.
You can catch me but cannot throw me.
I am your mother's brother's only brother in law. Who am I?