I had to go to the bathroom really bad this morning so I called a teacher's aide from another class and asked her if she could watch my class while I went to the bathroom. When I got back one student who is quite mischievous asked me, "Why did that other lady come?"
"Well I had to go to the bathroom and I just can't leave you guys here all by yourselves, can I?"
"Oh, next time you don't have to worry teacher, (with a twinkle in his eye) I can take care of things while you're gone."