A few days ago, I was eating dinner with my friend, her son, my partner and three of his ex-girlfriend's kids. The three youngest (all boys - 7, 9, and 12) were being very naughty. I had been talking about abstinence only education earlier, with the youngest child's mother. While the boys were acting up, I jokingly said to her that maybe abstinence only education might work if all young teens were required to watch kids acting that naughty on a regular basis.
A few minutes later, the twelve year old asked what abstinence was. Not being the child's parent or guardian I told him that it means to abstain and that to abstain means to not do something, like to not have dessert would be dessert abstinence.
He replied, "Oh, I thought abstinence was a religious thing, like it means you don't believe in God."