1.   As the steam rises and the bubbles get bigger, stare intently, watching for changes in color.

2.   Experts predict that juvenile crime will skyrocket when a population bubble of youngsters gets old enough to lift a gun.

3.   Some people blame you for letting the whole technology bubble get so big in the first place.

4.   Sparkling wines are more problematic, since some people find the bubbles get in the way of a good meal.