Don't eat apples. They hide razor blades.
Don't eat candy until we take it to the nearest
emergency room to have it X-rayed. See above.
Don't eat anything that isn't factory-sealed. It is
likely to contain poisons, toxins or hallucinogens.
Don't eat anything homemade, sealed or otherwise.
Don't ring the doorbell of anyone you don't know
personally. A pervert might answer.
Don't get close to groups of teenagers. They capture
children, mummify them in toilet paper and set them on
Don't set foot inside anyone's front door. This is
the night Satan worshippers have been waiting for.
Don't move from your parents' line of sight for a
second. Your face will wind up on a milk carton.
Don't cross any streets. You'll get hit by a runaway
vehicle driven by aforementioned teenagers.
OK, it could happen, by children run and fall down
every day... I know I did...
Don't run. You will trip over your costume.