Kids might be shocked into giving up crisps by a campaign that shows the damage the snack can do to your body.
Pictures of a girl drinking cooking oil will go up across the country, spreading the message: "What goes into crisps, goes into you."
A regular bag of crisps contains two-and-a-half teaspoons of oil and the British Heart Foundation hopes its campaign will make kids think twice.
It's thought half of UK kids are eating at least one packet of crisps each day.
The BHF is worried about the high amounts of salt, fat and sugar in common foods.
The UK's eating habits have led to concerns that a quarter of our kids will be overweight by 2020.