Its raining cats and dogs
Its raining hard or a lot
Like talking to a brick wall
Talking and no one is listening
Talking until I'm blue in the face
Repeating something over and over
Beat around the bush
Avoid talking about something
Its not rocket science
Its not hard
A dime a dozen
Something is common
Break a leg
Good luck
Hit the sack
Go to bed
Hang in there
Don't give up
