Ha ha.

A man and his wife had a row and as a result were giving each other the "silent treatment". The man realised that the next day he would need his wife to wake him at 5.00 a.m. so he could be sure of getting to work for an important business meeting. Not willing to be the first to break the silence he wrote on a piece of paper "Please wake me at 5.00 a.m." and left it where he knew his wife would see it. The next morning the man woke up to find it was 9.00 a.m. Furious that his wife hadn't woken him, he looked round to see a piece of paper on the bed. It said "It is 5.00 a.m. - wake up".