It's used to kick someone who joined a channel with a badnick.

on *:JOIN:#: {
  if (($me isop $chan) && (%badnick == on)) {
    if (*fuck* iswm $nick) { 
      /mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (*shit* iswm $nick) { 
      /mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    }
    elseif (*penis* iswm $nick) { 
      /mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (*cock* iswm $nick) { 
      /mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin 
    }
    elseif (*kdor* iswm $nick) {
      /mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    }
    elseif (*pussy* iswm $nick) { 
      /mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (*kadoy* iswm $nick) {
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (*kdet* iswm $nick) { 
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (*bitch* iswm $nick) { 
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (ass iswm $nick) {
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (asshole iswm $nick) {
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (*boob* iswm $nick) { 
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    }
    elseif (*boobsucker* iswm $nick) { 
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    }
    elseif (*boob_sucker* iswm $nick) { 
      mode $chan +b $nick 
      /kick $chan $nick Please change your nick if you wanna rejoin
    }
    elseif (*pussylicker* iswm $nick) { 
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    } 
    elseif (*pussy_licker* iswm $nick) { 
      mode $chan +b $nick 
      kick $chan $nick Please change your nick if you wanna rejoin
    }
  }
}