On its homepage, Google has an auto-suggest feature. Here's what popped up, verbatim, when I typed "how long" in:

-how long does cocaine stay in your system

-how long to boil an egg

-how long does alcohol stay in your system

-how long to cook a turkey

-how long does it take to get a passport

-how long does weed stay in your system

-how long does it take to get pregnant

-how long is the great wall of china

-how long did the great depression last

-how long does implantation bleeding last

Try it yourself, and see what fun responses you get!