A surprised friend, after Joe and I announced that we're vegetarian:
Friend: How is this possible?
Me: Well, you shouldn't eat meat either should you, as a Hindu?
Friend: Yeah well...I don't eat beef...unless it's by accident.
Me: How do you eat beef by accident?
Friend: Like if I'm in McDonalds and I order a Big Mac...but then I sit down and start to take a bite but realise 'oh fuck, that's beef', so I take it out and just eat the bun!
Me: But why would you order a Big Mac in the first place?
Friend: Because I'm hungover!!