One to three short lines. Long enough to hold one specific thing she can say something back about, short enough that she reads it without deciding to read it. That is the whole of the rule.

Why one to three lines is the range

She is not reading your answers. She is scanning them, on a phone, in a queue, with a dozen other men open in the same ten minutes.

An answer that takes two seconds to get through gets read. An answer that looks like it will take twenty gets passed over, and a passed-over answer scores the same as an empty one. The ceiling on length is set by how long she is willing to look before her thumb moves, and that is short.

The floor is set by something else entirely. She needs one thing in there she can respond to. One word does not give her that, and neither does a sentence that could belong to any man in the city.

Between those two you land on one to three lines. Not three sentences of setup and a punchline. Three lines on a phone screen, which is somewhere around twenty to thirty words.

What one word costs you

"Tacos." "Skiing." "My dog."

Each of those is true, and each one ends the conversation before it starts. She reads it, she agrees with it or she does not, and there is nothing left for her to do with it.

The other cost is the read she takes on you. A single word looks like a man filling in a box to get past it. She cannot tell the difference between too busy to bother and nothing worth saying, and both of those land the same way.

What a paragraph costs you

The long answer fails differently, and the men who write them are usually trying harder, not less hard.

A five-line answer reads as a small essay about yourself, which is an odd thing to hand a stranger. It also does her half of the work for her. If you have already told the whole story, explained why it was funny, and landed on what it says about your character, the only thing left for her to add is "haha nice".

Then there is the comparison. Next to her three-word answer, yours looks like effort she did not ask for, and effort nobody asked for reads as need.

What a good answer of that length actually contains

One concrete thing, stated plainly, with an edge she can pick up.

"I will drive an hour for good dumplings and I keep a list." Fifteen words. It is true, it is specific enough to be yours and nobody else's, and it hands her three separate ways in: where, why an hour, and whether her city beats yours.

Set that against "I love food", which is the same claim with the detail taken out. The detail is the entire job. Without it you have written a category, and nobody replies to a category.

The second thing a good answer does is stop early. End on the part you have not explained yet. Not a question, which reads like an interview, but the odd fact you left sitting there. She asks about it, and now she started the conversation instead of you.

Vary the length across your three answers

Three answers cut to the same shape looks like a form somebody filled in.

Make one a single short line carrying one strong claim. Make one two lines with a small story in it. Let the third sit between them. The variation does two things. It makes the set read like a man talking rather than a man completing a task. And it gives her three differently sized doors instead of three identical ones.

It protects you too. When one answer lands flat, the other two do not go flat with it.

How to cut an answer that ran long

Write it long first. Trimming down is far easier than padding up.

Then cut in this order. Delete the setup, because she does not need to know how the story began. Delete the explanation of the joke. Delete every adjective you added to make the fact sound more interesting, since the fact carries itself or it is the wrong fact. Delete the second example, because one is a detail and two is a list.

What survives is usually a third of what you wrote and it is almost always better. If it still runs long, the answer is carrying two ideas at once. Keep the stranger one and move the other under a different prompt.

When the length is not what is wrong with your profile

Plenty of men shorten every answer, change nothing else, and see no difference at all.

That happens when the writing was never the weak part. If your photos are not getting her as far as the words, the length of the words cannot help you, because you have been editing the part nobody reached. Which photo leads, what order the rest run in, and whether the whole page adds up to one recognizable man all sit upstream of any sentence you write.

The cheap way to find out is to hand the page to a friend who has never met you and ask what kind of life he thinks you have. If he cannot answer, trimming will not save it. What that page needs is a rebuild: photos that show a life, answers that each do one job, and the whole thing reading as one man rather than six unrelated slots filled on the same evening.