Time's Arrow 

        Time flies like an arrow.

        Fruit flies like a banana.

        --- (wrongly) attributed to Groucho Marx 

An elaboration…

Time Flies Like an Arrow

An Ode to Oettinger

Now, thin fruit flies like thunderstorms,
And thin farm boys like farm girls narrow;
And tax firm men like fat tax forms –
But time flies like an arrow.

When tax forms tax all firm men's souls,
While farm girls slim their boyfriends' flanks;
That's when the murd'rous thunder rolls –
And thins the fruit flies ranks.

Like tossed bananas in the skies,
The thin fruit flies like common yarrow;
Then's the time to time the time flies –
Like the time flies like an arrow.

— Edison B. Schroeder (1966)

 Observation…

        In The Realm of Meaning, Context is Everything.