What do you do with those string things in shirts?

You know how some shirts have those strings inside the sleeves at the shoulder... I assume to help in hanging it up. But I find them very annoying sometimes. Anyway, what do YOU do with them?

Keep them because you hang the shirt up? Tuck them in your bra strap? Tuck them behind your shoulder? Cut them off?
What do you do with those string things in shirts?
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