Has it intered?

[bothlegs]

A teacher was in a class teaching mathematics.While the teacher was continuing with his lesson,one student called Juma was siting on his desk opposite to the window looking outside.He was looking the mouse intering in its hole.The mouse has intered in its hole but its tail was out side.Suddenly the teacher asked, JUMA as it entered?Meaning that Juma have you understood.Juma replied yes but the tail is still outside.