Why are hedgehogs prone to pregnancy and brain teasers?

Hedgehog has many thorns on its back, which means that it has been fucked many times, so it is easy to get pregnant.

There is a cobra in the forest, but it never bites. Why? Brain teaser answer: there is no one in the forest. 2. What is the word "roll another roll"? Brainstorm answer: move. Why did Xiao Ming become a "father" at the age of 4? Brainstorm answer: When playing "house games".