Student: There are 505 rocks in a car. If 8 fall out, how many are left?
Teacher: There will be 497 rocks left.
Student: Ok!!
Student: How do you put an alligator in a closet?
Teacher: You can't, it won't fit.
Student: No!! Just open the door, put the alligator in, then close the door.
Teacher: Ohhh, now I get it.