Text says: Not like riding a bike. Text is on a purple/red background with paraphernalia such as balls, paper rockets, pens, game controllers surrounding the text.

Not like riding a bike

There’s that saying “It’s like riding a bike!” which means
Said of skill that, once learned, is never forgotten.
– Wiktionary
Why does that saying exist? I imagine that for neurotypical people, many skills that they learn tend to work like that. You learn it once and then you never really have to learn it from the beginning again?