30


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oh dark thirty

In military time, a non-specific time in the early morning, before the sun rises. Why on earth are we meeting at oh dark thirty? That's too early to do anything besides sleep!
See also: dark, oh, thirty

be (on) the wrong side of (an age)

To be older than a certain age. Why is she dressing like a teenager when she is clearly the wrong side of 40? I'm sore after every workout these days, so I'm definitely on the wrong side of 30!
See also: of, side, wrong

be on the ˌright/ˌwrong side of ˈ40, ˈ50, etc.

(informal, often humorous) be younger/older than 40, 50, etc: ‘How old is she?’ ‘On the wrong side of forty, I’d say.’
See also: of, on, right, side, wrong