Knock KnockWho’s there?Perth!Perth who?Perth your Posted on December 20, 2015December 20, 2007 by admin Knock KnockWho’s there?Perth!Perth who?Perth your lips and whistle! Spread the love Related posts: Knock Knock 164 Knock KnockWho’s there?Marcella!Marcella who?Marcella is Knock KnockWho’s there?Iona!Iona who?Iona a Knock KnockWho’s there?Vassar girl!Vassar girl