call it a day

To stop working.

To quit work and go home; to say that a day's work has been completed.

You’re absolutely fed up with everything going on
Or something well shit has happened

A day that resists definition, that ends only when you hand the phone over to the person beside you. It's late and you realize you're hungry. Then suddenly you know there was one more thing to say but you've already handed it over. For a moment you realize that unless you press it firmly closed your thoughts will flap in the warm wind. Until then, the person on the other end will follow you in the wrong direction. What you said will never be what you meant, an imperfect urban plan. Some day in the past, the entire conversation would have taken place in letters. You would have pressed firmly closed what you never said. The person beside you hangs up.

To stop doing something at the present.

1) An expression of surprise at slanguage one hasn't heard before, especially when it's obviously sexual or scatological in nature.

2) A tongue in cheek way of turning an ordinary comment into a double entendre by implying the above.

On 16th of March, is international "call Marcus wet day". On this day, you are legally required to call any person called Marcus "wet" or "a wetty". People named Zak thrive on this day, and treat it as a second birthday for them. The following exchange is an example of the rituals that take place on this day:

Person 1(directed to Marcus): "Oi, -insert name here- thinks you're wet!"

Marcus: What did you call me?

Person 1: A wetty

Marcus: I'm going to beat you harder than my mum