IN: What happens next?

How to prevent infant diarrhea
Get your infant a rotavirus vaccine.
Rotavirus is a serious ailment that can cause severe diarrhea. The vaccine for rotavirus comes in two doses, one that is given at 2 months, and one that is given at 4 months.

OUT: Ultimately, a simple vaccination could prevent your child from getting diarrhea, especially severe diarrhea. Wash your hands with soap and warm water before handling your baby.

IN: What happens next?

How to swim like the pros
Think of a stroke that you would like to improve your technique on.
If you can't decide, then just pick a stroke name out of a hat. The main stroke is the front crawl, but many people struggle with butterfly the most.

OUT: Whichever stroke you choose, however good you are at it at the start, learning the perfect technique for that stroke will help you with all of the others. Watch some videos or read some books about that stroke.

IN: What happens next?

How to doodle during class
Figure out which class (es) you find most boring.
You can even doodle during the entire school day if you're lucky and careful.
Find a school notebook that is fairly empty.

OUT:
A few class notes from previous classes in the front works best. It makes it more believable that you weren't doodling.