Why is "Let's take this offline." funny?

Office-speak

Who it channels

The meeting-room manager deferring a question they would rather not answer.

Where it comes from

Corporate meeting-speak for "we will not discuss this here" — often meaning it will never be discussed at all.

Why it lands

It sounds decisive and organised while actually being a polite burial. Used among friends, in person — already offline — it is also a small logical joke at its own expense.

How to drop it

Sitting in a café, a friend raises something awkward. You hold up a hand: "Let's take this offline."