Hi! I'm a teen girl, and I can say that I can see myself in your brother, doing the same thing. Your brother mirrors exactly what I did at that age - doodles, watching videos.
Don't worry - it's harmless, and quite honestly, there are worse fetishes than this. He probably won't grow out of it, but it's not likely to be harmful, even in adulthood. The worst that could happen is that he gets turned on when his girlfriend's stomach growls. :)
Unlike what other people have said, stomach growling doesn't always link to vore. Sure, it may do, but only some people with a stomach growl fetish like vore, not all.
I don't suggest you talk to him. One mistake many parents make (I know you're not a parent, but still) is confronting their child/teen. If you do talk to him, in future, he may be able to cover it up because he's embarrassed.
The best thing to do for now it to just leave it, unless you find porn or something very inappropriate, in which case, you should. However, be very gentle and don't scold him if it's the first time. He may have just stumbled upon it by accident while looking for stomach growl videos (believe me, I have done the same!).
I'm not a parent, but being a teen, I know what happens when you tell a teen/tween off and shout at them or take their stuff away - they hide it. And trust me, they will get so good at it, you won't know what they're doing or even when they're doing it. Teens aren't dumb, like people think they are. So say to him that it isn't appropriate to watch porn, and don't try and sugarcoat anything either. Just tell him the truth. It's the best you can do.
Hope this helped. :)
From this i can deduce that your brother has either got a stomach growling fetish or is interested in vore. If you did not already know vore is a fetish where a person receives pleasure from the thought of being eaten whole or eating someone whole. In your brothers case probably the latter, where he would enjoy the thought of swallowing someone whole and alive and seeing the bulge in his belly and digesting the person to hear his stomach gurgling. It can be a phase but there are many videos online he may watch on youtube so you may wish to block youtube on an account set up for him. Hope that helped.
The grinlord.
There is a huge difference between growling stomach and growing stomach.
It may be that some of the foods he eats may put him in a bit of distress. Boys don't typically talk over this stuff with their parents unless they are really in pain. doesn't mean that he has to suffer though. Of course, he could also have a friend whose stomach is making a lot of noises.
Probably only way to find out is to ask or say something like, "did you know that it is real easy to take care of a stomach that is making noises". You can always say that you noticed he had googled that topic.
From the looks of it, i can easily conclude that this boy has a fetish for stomachs, particularly female's. This could be endosmatophilia, vorarephilia, or another stomach-related fetish that's developing in him.
It's nothing serious, really. It doesn't affect his brain or anything of the sort, nor is it a disease.
It is liable to develop more sexually when he does hit puberty, as alot of fetishes tend to do. i would just leave him alone with it- maybe he will grow out of it.
-Luna
Maybe his stomach has been growling a lot and he's embarrassed - or scared that he has some weird cancer or something?