The ray hits you, and you instantly shrink. Your clothes grow larger, and then in a few moments your five. You remember everything, but have the body of a child. You start up the stairs, and realize your clothing is dragging you behind.
"What the heck?" You ask, as you strip off your clothes and stand naked. "Heh heh heh." You giggle. You would never be able to do this as an adult.
Well, now that that's over, you stubmle up the stairs and start open the door and leave the basement.