Knock Knock, Who's there?
Bigish, Bigish Who?
No thanks I've already got one.

(US translation: the Big Issue is a magazine sold by out-of-work people on UK street corners. Modern day street cries are: "Big Issue". Not very musical nor lyrical but that's modern life).

Boo, Boo Who? I wasn't that bad.

Hutch, Hutch WHo, Bless You.