Another "Little Billy" one:-
Little Billy is in school, the teacher is asking the class "What does your Father do for a living?" Tommy gets asked and replies, " He's a postman Miss" Sally replies " a Brickie miss, so it goes around the class until it is Billys' turn. The teacher asks, with some trepidation " what does your Father do Billy? Billy replies," dunno Miss, never knew him!." For once the teacher feel sorry for little Billy, so asks " well what does your Grandad do then? " Billy replies " Nothing Miss" the Teacher says, "you mean he is retired or unemployed Billy?" " No Miss says Billy, dead Miss!" Oh I am sorry Billy! , what did he do before he died?" Billy pauses and replies " Coughed Farted and Fell off the chair!"