I assume Al found this container at some sort of mechanic/repair place.  But in my imagination, he found it at some completely unrelated place, like… a book store.  You go in to buy Twilight, totally ironically of course, and the person behind you in line makes fun of you?  It’s okay!  There’s a cup full of sharp objects right there, and you can make sure that person never leaves the parking lot!  Because of the Tire Flatners!

Thanks for that little exercise in mental vandalism, Al!