Knock KnockWho’s there?Howard!Howard who?Howard can Posted on August 25, 2017August 25, 2009 by admin Knock KnockWho’s there?Howard!Howard who?Howard can it be to guess a Knock Knockjoke? Spread the love Related posts: Knock KnockWho’s there?Disaster!Disaster who?Disaster be Knock KnockWho’s there?Whoopi!Whoopi who?Whoopi cushion! Knock KnockWho’s there?Teheran!Teheran who?Teheran up Knock KnockWho’s there?Iowa!Iowa who?Iowa you