I saw this movie when I was really young but I just thought of it and I can't remember what it is.
These two brothers run away from home and there's a scene where the older brother gives the younger brother tinfoil and he bit it and it shocked him because of his fillings and the older brother told him that he was special because of it.. That's all I can remember pretty much.
I remember they steal a red car and they get into a car accident because the younger brother tries to drive I think.
Like I said I was REALLY young when I saw it
And I think it is a movie from the 80s or the 90s.

Josh and S.A.M. (1993)

That's it! Thank you so much!