Lineman

When artist draws a magic line, it takes on a life of its own, becoming a silhouette of a living hot-tempered person. This "Mr. Linea" wants more things drawn so he can enjoy himself, but the artist loves having fun on Mr. Linea's account.

Lineman is a 1971 short animation movie, starring Bruno Bozzetto, Guillermo Mordillo, Osvaldo Cavandoli. It holds an IMDb rating of 8.1/10 from 3,457 votes and runs 3m.