Crystal Ball exercise from the Arduino Projects Book with my little twist on the answers.

FortuneTeller.ino

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

const int switchPin = 6;
int switchState = 0;
int previousSwitchState = 0;
int reply;

void setup() {
  lcd.begin(16, 2);
  pinMode(switchPin, INPUT);
  lcd.print("What it do?");
}

void loop() {
  switchState = digitalRead(switchPin);
  if (switchState != previousSwitchState) {
    if (switchState == LOW) {
      reply = random(8);
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("You in foe it: ");
      lcd.setCursor(0, 1);
      switch(reply) {
        case 0:
          lcd.print("Hell naw");
          break;
        case 1:
          lcd.print("Stupid question");
          break;
        case 2:
          lcd.print("Foe show");
          break;
        case 3:
          lcd.print("That ain shit");
          break;
        case 4:
          lcd.print("You dumb");
          break;
        case 5:
          lcd.print("It ain like dat");
          break;
        case 6:
          lcd.print("Iunno");
          break;
        case 7:
          lcd.print("Biggity bitch");
          break;
      }
    }
  }
  previousSwitchState = switchState;
}