chew on the scenery

chew on the scenery

To be exaggeratedly or flamboyantly melodramatic or overly emotional while acting a role, as for television, theater, or film. I hated working with him on that play—every night he'd go out and chew on the scenery so much that he was the only one the audience noticed! I love watching hammy actors chew on the scenery in bad movies.
See also: chew, on, scenery