Dooby Doobid Posted on March 11, 2016March 11, 2010 by admin Knock-knock… Who’s there? Dooby Doobid… Dooby Doobid who? AH! A Frank Sinatra fan! Spread the love Related posts: Knock Knock 192 Knock KnockWho’s there?Bertha!Bertha who?Bertha-day greetings! Knock Knock 135 Police