1A Walt Disney cartoon character, who first appeared as Mortimer Mouse in 1927, becoming Mickey in 1928. During the 1930s he became established as the central Disney character.
1.1[as modifier]informalOf inferior quality:people think you’re a Mickey Mouse outfit if you work from home...
None of these polls is a Mickey Mouse poll - all are done by reputable polling companies and all with decent samples - Nielsen has 1400 people, Morgan 1300 and Newspoll 1700.
They will think that a Mickey Mouse court fouled up, and if they'd been in a US court they'd have seen justice done.
I got into a lot of trouble a few years ago for calling the health board a Mickey Mouse organisation.