UnScramble this Word: y t e a s r h i?

Questions

---------- got their name from a sexual device depicted in the book, The Naked Lunch.?

---------- goes first in Tic Tac Toe.?

"Crack" gets its name because it ---------- when you smoke it.?

---------- of McDonald's profits come from the sale of Happy Meals.?

---------- cases of soft drinks produced in the next year will be flatter than a bad tire.?