amateur night
/ˈamət(ʃ)ə ˌnʌɪt/originally US
noun
An evening set aside at a musical or theatrical venue for amateur performers; a talent show. Also in extended use: a period characterized by a lack of professionalism; an example of amateurishness or ineptitude.
adjective
Resembling or characteristic of an amateur night; inept, shambolic, amateurish.
Phrases
amateur night in Dixie
Origin
Mid 19th century. From amateur + night.