Deny it. Why are they going to take a thief's word over yours?

Alright, so you're a bad liar.. but you have to do something. You're basically saying that you can't lie, but you can't tell them the truth.. I'm sorry that it doesn't work this way.

Either get your story straight in your head so that you can't tell it from the truth, or get ready to admit you did some experimenting and it won't happen again.

I'm sorry you're put into this situation, I'm extremely conservative and I've tried coke a few times. If my family or friends ever knew, I'd be fucked.

I know your guilt.