come undone

Ko_An posted a photo:

You don't know how you're coming across
You don't know what you're coming across
You don't know who you're coming across
You don't know how you're coming across
So you come undone

You don't know how you're coming across
Acting like you don't give a toss
Walking around like you're on some kind of cross
And it's a shame on you, the irony's lost
When you come undone...