This is a test of commonsense. Complete the next sentence:

How to make a coke float
Fill a glass 3/4 with cola.
Set the glass on small plates so you can catch the overflow from the fizz. Pour the soda slowly to keep it from overflowing.
For best results, start with chilled soda. You can also chill your glass by setting it in the freezer for about 10 minutes beforehand.