Even rats can only be kicked around for so long before they've had enough.

I've had enough publicity for 15 lives.

We already have a sabbatical system. It's called opposition, and I've had enough of it.

I wondered if people might not have had enough of Simon Armitage and wondered whether I hadn't had enough of Simon Armitage.

I've had enough boyfriends and enough issues. I'd seen enough train wrecks.

There's only so far you can go before you say enough is enough.