Answer:
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
During the 1800's these turned women into hourglasses and is becoming more popular again these days
What has a big mouth, yet never speaks?
Though I have neither legs nor feet, my use is for to go; Although I cannot speak, I tell what others want to know
Three little letters. A paradox to some. The worse that it is, the better it becomes.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.