The context of the following conversation is Lee reached his destination but had to make sure he locked up his bike before entering.:
Lee says I love to use my bike instead of my car..
The friend responds It's a good idea because it is environment friendly..
Lee responds That's true. I just need to remember to lock my bike before I enter the store..
The friend responds Oh yes! You're doomed should you forget..
Lee responds It will be gone quickly..
The friend responds You are right about that..