The news of late is all aflutter about the phenonmenon of 'sexting, text messaging that is sexually motivated. Timed perfectly to the trend is a fun new application for iphone, ibirthcontrol. Just released a couple of weeks ago, the promotional materials explain,

"Looking for a creative way to control your or your partner’s urge to have a baby? Then iBirthControl is for you. The classic birth control pill packet is transformed into 28 days of crying babies to help curb the urge. To get your daily dose of crying baby, just touch a pill. Each pill represents a different crying baby. The musically inclined can “mix” their own crying baby symphony by alternately pressing different pills."

The sound of a screaming baby is possibly one of the most effective forms of birth control, I know from ongoing firsthand experience, and relatively inexpensive (not including the cost of the actual screaming baby if it happens to be yours.) ibirthcontrol is a free application that, unlike any other birth control method, can be used by both men and women. But, like everything awesome, it's only available to iphone (and ipod) users.