Son asks his dad,
"what`s the difference between theoretically and realistically"?.
Dad says, "That`s hard, but i have an idea". "Ask your mum if she would sleep with the milkman for 1 million pound".
" Mum says yes".
"ask your sister if she`ll sleep with the coalman for 2 million pound".
"Sister says yes".
"Well, there`s your answer son, theoretically we`re sitting on 3 million quid, but realistically we`re living with two slags".