Use "airtight alibi" in a sentence

1. I'm sure you are, but thanks to you I have an airtight alibi, don't I?

2. I'm just saying, one of us has an airtight alibi... and the other was found passed out next to Bonnie's body, so...

3. Oh, and FYI, in order to back up your airtight alibi, I had to tell everybody in the building the same thing I told the police.