What does Sunday have to do with this?
This guy asks for my business card. I say:
No, 'cause it's a Sunday.
No, 'cause it's Sunday.
Are both okay?
I don't work on Sundays, so, I don't carry business cards.
I did. But I also, added, 'cause it's a sunday.
Maybe, 'cause I was dressed very casually, so I thought he had noticed that, but he still asked for my business card.