Sample this cocktail of twisty brain teasers

Sample this cocktail of twisty brain teasers…

1. There are twins and they were born on the same day and year (of course, this is obvious!). One is thirty and the other is thirty too. They were born in April and their birthdays are in May. Can you make sense of this?

2. A man and a dog were walking down the road. The man rode, Yet, the dog, walked. What was the dog's name?

3. It cannot be seen,
Cannot be felt,
Cannot be heard,
Cannot be smelt.
It lies behind stars,
And under hills,
And empty holes it fills.
It comes first,
And follows after,
Ends life, kills laughter?
What's it?

4. It's the beginning of the end and the end of time and space. What's it?

(How about some on kinship ties?)

5. It's unlawful to marry your widow's sister in Africa. Why do you think this law was instituted?

6. Who is the sister to your mother's brother?

7. Who is the daughter of the daughter of your mother's grandmother?

8. How are you related to your brother-in-law's wife's grandmother's husband?