A story about this — 4 years ago
A cartoonist draws Bosko, who comes to life. Bosko speaks, sings, dances and plays the piano before the cartoonist sucks him into his ink pen and pours him back into the inkwell. Bosko pops out of the bottle and promises to return.
The film was directed by Hugh Harman and Rudolf Ising, and can be seen on disc 4 of the first volume of the Looney Tunes Golden Collection as a special feature.