no prizes for guessing what..., who..., etc.

no prizes for guessing (something)

A phrase indicating that the answer is very easy to deduce. Primarily heard in UK, Australia. No prizes for guessing why Sarah didn't show up to work on the day after her birthday.See also: guess, no, prize

(there are) no prizes for guessing what..., who..., etc.

(informal) (it is) not difficult to guess or find the answer to something: No prizes for guessing who does all the work around here.See also: guess, no, prize