The creature under the sink

In the weekend I just remembered I left my hat at school. So I got warm clothes on because it was night and then I went to school to get it. Soon as I got there I noticed the door was open to room five. I went inside I was scared because I heard some gurgling from the dirty, rusty and old sink. A big eel jumped out the sink. It grabbed me by one hand. I got a pair of scissors from the other and then I cut its head off. But it turned around and tried to get me with it's tail but it died.