"McDonald's Extra Ingredient" joke

In case you missed the article, someone found a condom in a McDonald's hamburger recently. Here's David Letterman's explanation in his Top 10 format

Top Ten List... McDonald's excuses for the condom in the Big Mac

10. We were test marketing the new' 'McTrojan''

9. Condom, Condiment - what's the damn difference

8. It still tastes better than the Arch Deluxe

7. It was either there or in the vanilla shake

6. Turns out the rumors about Grimace and Mayor McCheese are true

5. We're experimenting with a new even happier Happy Meal

4. So what - a regular Big Mac is 60% latex anyway

3. Employees too embarrassed to say' 'Would you like condoms with that''

2. Drive-thru speaker broken-''Coke with lots of ice'' sounded like' 'Prophylactic device''

1. When you're serving billions and billions, you can't be too careful.