My teens swear when my husband is home as they know he doesn't like it. We are all getting very fed up with each others company and hubby always nitpicking at them they know id they say the F word he flips out, they love the reaction and the shouting match that then takes place. They rarely swear with me maybe now and then but I don't react so hey son't do it. Hubby says I am undermining him by not disiplining them but I am sure if he didn't react they wouldn't do it!!!