The context of the following conversation is Robin found a four leaf clover and felt it was good luck when she got great job offer the same day.:
Robin says Guess what happened to me today?.
The friend responds What happened, anything good?.
Robin responds Yeah, I found a lucky four leaf clover in the yard this morning..
The friend responds How do you know it was lucky, and not just a regular four leaf clover?.
Robin responds Well, I got news later that I got that job offer that I applied for last week..
The friend responds Wow, maybe it is a lucky four leaf clover..