my mom told me if you never took a splinter out of your finger it would go into your bloodstream and pierce your heart and you would die. The only way to get it out was with a firey hot needle, ...

this reminds me of "those fruit rollups stick to the insides of your stomach"

my mom always said if we swallowed our gum it would stick to our guts forever or if we swallowed pits or seeds a tree would grow in our stomach.