Wake-up Call – Level 3

A man and his wife were having some problems, so they decided to try silent therapy.
The following week, the man realized that he needed his wife to wake him at 5 a.m. He had to catch an early flight, but he didn’t want to be the first one to break the silence. So, he wrote on a piece of paper:
“Please wake me at 5 a.m.”
The next morning the man woke up, but it was already 9 a.m. He missed his flight!
He was furious and started screaming at his wife, but she just showed him a piece of paper next to his bed.
“It’s 5 a.m. Wake up.”