Said after a very corny, very unfunny joke. Derived from the old Vaudeville comedy acts in which almost every one-liner was punctuated by a musical jingle. Usually played on the piano by a portly man with bright red cherub-like cheeks.
Commonly known as a 'Deanerism', Schmikity Shmoo is in reference to anything that is running on schedule or going along without problem or interference