What does this rebus puzzle means ?

What does a man do only once in his lifetime, but women do once a year after they are 29?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Can you solve the below geography rebus by decoding the below rebus ?

Can you solve the maths in the below-given picture equation?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

What does the below rebus riddle means?

What am I?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?