I'm a good teacher but I can be hard sometimes

Sometimes I feel like a human hourglass

Sometimes I talk too much, if it bothers you, you can shut me

Sometimes I talk too much, if it bothers you, you can shut me

Sometimes I talk too much, if it bothers you, you can shut me

Sometimes I talk too much if it bothers you you can shut me up

Sometimes I talk too much, if it bothers you, you can shut me

Sometimes I talk too much, if it bothers you, you can shut me

Sometimes I talk too much, if it bothers you, you can shut me

Sometimes I talk too much, if it bothers you, you can shut me

Sometimes I talk too much, if it bothers you, you can shut me

Sometimes I talk too much, if it bothers you, you can shut me