What did they give Elmo before he left the factory? Two test-tickles.
Elmo's Factory Prank
Explanation
Explain Bear
Alright, listen up, you knucklehead. You think Elmo just rolls off the assembly line ready to giggle? Nah, they gotta make sure he's ticklish! "Test-tickles" sounds like "testicles." Get it? You would if you weren't so dumb.