"Knock Knock - Stan" joke

Knock Knock
Who's there!
Stan!
Stan who?
Stan your ground! Knock Knock
Who's there!
Stan!
Stan who?
Stan back, I'm knocking the door down! Knock Knock
Who's there!
Stan!
Stan who?
Stan back, I'm going to sneeze! Knock Knock
Who's there!
Stan!
Stan who?
Stan by your man! Knock Knock
Who's there!
Stan!
Stan who?
Stan back, I'm coming through! Knock Knock
Who's there!
Stan!
Stan who?
Stan back or I'll shoot!Knock Knock
Who's there!
Stan and Della!
Stan and Della who?
Stan and Dellaver!