Horse eating the grass

One day in drawing class, a teacher see the all drawing of her students. She feel weird when she see the Abu's drawing. Abu known as the lazy student in her class.

Teacher : Abu, where is your drawing? it too clear in your drawing paper.
Abu : Horse eating the grass teacher.
Teacher : where is the grass ?
Abu : the horse eating all the grass, teacher.
Teacher : So, where is the horse ?
Abu : horse went to other place, this place is run out of grass, so, there is no reason for horse to stay here.
Teacher : ABU!!!!

p/s - everyday, teacher will face many of student with different personality, :)