We've all heard of or seen the silly old movies where spies communicate or identify themselves through obtuse phrases that no one would think to say out of hand. The idea is to make a game of it. To play, you take a noun, an action, and a time of day.

For example:
The seagull plays pool at high noon.

Your time doesn't have to be specific, and could be implied time of day like "twilight" or "dawn." Or, if you needed to be specific, it could even be a proper time. Try to be as silly as possible with the phrases, as that is what makes it fun. And if you want to be even sillier, throw in a stereotyped "comrade" at the end every now and then. :)

Let the gathering of spies commence!

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Geraniums unicycle at half past two.

The tambourine hands over his business card before breakfast.

The arsenic falls from the clouds at midnight.

The whippoorwill waltzes at dusk.

The turkeys lick popcorn at dawn.

The aardvark sings at midnight.

The peddler sneezes to the tune of "I wish I was in Dixie" at eighteen-hundred.

The giraffe soft shoes at 4:32 AM