Maynard will not say anything worse than he does on Opiate or Undertow. If she's heard those songs and gets what those lyrics refer to the worst you'll have to deal with is a cringe-moment here or there where he mentions something sexual. He used to encourage the crowd to strip down and fuck or jerk off when they got home or something but lately he's been pretty calm. He does curse though. The rest of the band is statuesque and totally silent.