The rock is quite rude to Penelope. How do you feel when people are rude to you? How do you think others feel when you are rude to them?
If what the rock said was true, and you had also lived many lifetimes, what do you think you would have done in your previous lives?
The rock seems very angry with Penelope after she kicks him several times and eventually drops him. How would you feel if you were the rock and some stranger kicked and then dropped you?