Her roommate's mom works with a lady that has a 17yr old, mentally-retarded son that is capable of staying at home alone while she is at work, or so she thought.
She received a call from her son.
Son: "Mom, I caught something, you have to come home and see it!"
Mom: "What do you mean, you caught something, what did you catch?"
Son: "I caught a TROLL, you have to come home and see it!"
Mom: "What do you mean?
Son: "I caught a troll!, come see!"
The mom hangs up, tells her boss that she needs to go home and find out what is going on.
She arrives at home and her son is super-excited, he takes her to the closet and.......

He loves the movie "Chronicles of Narnia" from which he thought trolls were real :)