Knock KnockWho's there?Stopwatch!Stopwatch who?Stopwatch your doing right now!Knock KnockWho's there?Stu!Stu who?Stu late to ask questions!Knock KnockWho's there?Sue!Sue who?Sue whomever you want!Knock KnockWho's there?Sultan!Sultan who?Sultan pepper!Knock KnockWho's there?Summertime!Summertime who?Summertime you can be a big pest!