mail it in
Verb
Meaning
Used other than figuratively or idiomatically: see mail, it, in.
(idiomatic) To deliver a performance without commitment or effort, with lackluster results.
Source: en.wiktionary.orgVerb
Used other than figuratively or idiomatically: see mail, it, in.
(idiomatic) To deliver a performance without commitment or effort, with lackluster results.
Source: en.wiktionary.org