Knock KnockWho's there?Doctor!Doctor who?You just said it!Knock KnockWho's there?Don!Don who?Don Patrol!Knock KnockWho's there?Donatello!Donatello who?Donatello'n me!Knock KnockWho's there?Don Giovanni!Don Giovanni who?Don Giovanni talk to me!Knock KnockWho's there?Don Juan!Don Juan who?Don Juan to go to school today!