German phrase
Ich hatte das schon einmal.
Meaning
I've had that happen before
When to use it
It shows past experience. Use it when discussing what to do next.
Example dialogue
Ist dein Computer abgestürzt?
Did your computer crash?
Ich hatte das schon einmal. Deshalb weiß ich, was zu tun ist.
I've had that happen before. That's why I know what to do.