Professor of maths sends his wife txt, "Dear wife, your 54 years old you can no longer satisfy my needs so when you get this message i will be in a motel with my 18yr old assistant i'm sorry i will be home late"
Wife sends reply "Dear husband your are also 54 and by the time you get this message i'll be at a motel with my 18yr old toyboy, your a mathematician so you will no that 18 goes into 54 a lot moore times than 54 into 18, so dont wait up !!
