A single lyric, sung on repeat, becomes the whole song
A child's one-line song gets sung for weeks; printing that line twelve times over shows what the repeating does, not just what it says.

One line of invented lyric, hand-written in butter yellow, stacks twelve times down the chest of a deep plum tee that's still half out of its shipping bag. It reads I AM A BANANA MAN every time. No two repeats are quite the same size or slant, because each one was written out again by hand rather than copied and pasted.
That unevenness is the record of three weeks of actual singing, not a design flourish added afterwards.
Why print the line twelve times instead of once?
Because once is a caption, and this song isn't a caption — it's something that gets sung on a loop.
A single instance of I AM A BANANA MAN, printed once and centred, would read as a joke told a single time. The point of this particular song is that it hasn't stopped for three weeks: at breakfast, in the car, halfway through a sentence about something else entirely. Twelve repeats stacked down a chest is the shirt doing what the song does — saying the same thing again, and again, and not getting tired of it.
What makes a print like this work rather than just look busy?
Keeping every repeat in the same unsteady, once-off hand it was actually written in, rather than setting it in a single clean typeface and multiplying that.
A typeset version repeated twelve times is decoration — a pattern. Twelve individually handwritten passes, each a little larger or smaller, leaning a little more or less, reads as twelve separate moments of actually singing it. That drift between repeats is what distinguishes this from wallpaper, and it's worth protecting rather than tidying into uniform rows.
Whose line is this, and does anyone need to sign off on it?
Nobody's but the child's — there's no lyric here to license because there's no song it belongs to except the one made up on the spot.
If this had started as a line lifted from an actual song on the radio, that's a different situation: recorded lyrics belong to a writer and a publisher, and reproducing them on a garment for sale is the kind of thing that gets licensed rather than assumed. An invented line with no source has none of that attached to it. It's closer to a word a toddler mispronounced that the whole household adopted — nobody wrote it first, so nobody else has a claim on it.
Does this work for a phrase that isn't sung, just repeated?
Yes — a chant, a catchphrase, a joke told the same way every time works on the same logic as a song with one line.
What matters is that the words are said the same way over and over, by the same person, until the repetition itself becomes a fact about that stretch of their life. A joke a child made once and now performs on demand is built the same way: the content is almost beside the point, and what's being printed is the loop.
Doesn't a made-up line about a banana mean nothing to anyone outside the house?
To a stranger, yes, and that's not a problem with the design — it's what the design is actually for.
Nobody buying this print needs the line to be funny to them. It's not aimed at a stranger; it's aimed at the household that's heard it said, unprompted, at dinner every night for three weeks and will recognise it instantly. A shirt that a stranger could also get the joke of would have to be about something more generic than one specific song — the same trade-off as any question this house keeps being asked and keeps answering the same way.
Does it print well?
Yes — hand lettering in one flat colour is one of the more forgiving things to put on fabric, provided none of the strokes get too fine.
Butter yellow on deep plum has the contrast to hold up at a distance, and because the lettering is loose and slightly uneven to begin with, the print doesn't need to fake a precision it didn't have. The main thing to watch is stroke weight: a thin, scratchy pen line can thin out further in printing and start dropping out mid-letter, so the twelve repeats want to be traced a touch bolder than the original scrawl, not thinner.
How do I get one made?
Describe the line at JustOG — the words, as said, and roughly how many times it gets repeated in a day. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped.
Designs other people have published are in the shop.
Tomorrow it'll still be the banana man. It usually is.