It's a reference to a fairly widely known, and presently topical, song: Your brain is full of spiders You've got garlic in your soul, Mr. Grinch I wouldn

It's a reference to a fairly widely known, and presently topical, song: Your brain is full of spiders You've got garlic in your soul, Mr. Grinch I wouldn't touch you with a 39 and a half foot pole!