Gsus.

on *:text:!leet:?:{
  if (!$hget(leet,$nick)) {
    var %leet [ $+ [ $nick ] ] = $rand(0,100)
    if (%leet [ $+ [ $nick ] ] isnum 99-100)  {  
      /mode #TheLeet +v $nick 
      /cs access #theleet add $nick 3
      /msg #TheLeet $nick was %leet [ $+ [ $nick ] ] $+ % Leet! 
    }
    if (%leet [ $+ [ $nick ] ] isnum 0-10)  { 
      /mode #TheLeet -v $nick 
      /kick #TheLeet $nick lololol. u r unleet .. you were only %leet [ $+ [ $nick ] ] $+ % leet .. try again in 2 minutes.
      /hadd -mu120 leet $nick 1
    }
    if (%leet [ $+ [ $nick ] ] isnum 80-100)  {  
      /mode #TheLeet +v $nick 
      /msg #TheLeet $nick was %leet [ $+ [ $nick ] ] $+ % Leet! 
    }
    else {
      /msg $nick s0rry, u were only %leet [ $+ [ $nick ] ] $+ % leet. try again in 2 minutes.
      //mode #TheLeet -v $nick
      /hadd -mu120 leet $nick 1
    }
  }
}