Hello, I was hoping someone could please help me identify a movie.

It was a horror movie from either the 70's or 80's, and all I recall is that a boy is in the kitchen chopping some vegetables or fruit and chops off his finger. His mother is swimming (I think) and comes in upset for having been disturbed, throws his finger into the sink and locks him in his room.

Thanks for the help!

(I have been trying to find the title for ages!)

I kept looking for this movie for you but could not find anything. It's very little to go on.
So I suggest trying this site.
Horror Movies of the 1970's - filmsandtv.com (http://www.filmsandtv.com/genre.php?gs=1970Horror)

It seems more like a drama than a horror film