13 Different types of metal:
1. Brass
2. Iron
3. Gold
4. Silver
5. Copper
6. Platinum
7. Aluminum
8. Bronze
9. Tin
10. Zinc
11. Mercury
12. Titanium
13. Steel
Since I was talking about TGS not wanting to touch the pizza dough when it was sticky, how about:
13 things that tend to be sticky
1. Freshly mixed pizza dough
2.