In an effort to combat sexual thoughts, the family uses the code word "Nike" to signal when they are having sexual thoughts or thinking of someone in a lustful manner. A family source told PEOPLE:
"They say it, and all the boys look straight down to the floor every time. It's like an automatic military thing. Things like that blow my mind."
Jim Bob Duggar does everything he can to keep his children from having any sexual thoughts. He goes to great lengths to keep his children from participating in any pop culture trends in an effort to shield them from sexual inclinations. According to PEOPLE, he even removed the batteries from toys that play music to discourage his children from dancing.
Some suggest that this strict upbringing caused Josh Duggar to molest his siblings as a teenager and to cheat on his wife. It seems "Nike" wasn't enough to hinder his curiosity.