Son,
One day, you will walk into a Dollar Tree (probably a Five Dollar Tree by then) and see a 10 pack of razors for a dollar. You will be amazed at how inexpensive this is, and, because you are my son, you will have an overwhelming, near irresistible, urge to buy and use these razors.
Because I love you, it is imperative that you listen to me as I tell you, with all of the urgency I can summon, to resist this urge with all of your power.
Trust me on this.
Dad