Hole in the floor, it was all good

So we drove down...[to] the SURF AND TURF restaurant...Nice. And we had a great young waitress, so funny. I had just 10 shrimp as an appetizer, rolls, and coffee, [and E] had crab cake sandwich and french fries, it was all good. 

We laughed because my coffee cup was so full I asked [the waitress] to take some out, and she turned around and (not angry) just poured it on the carpet. We looked astonished and E said, did you pour the coffee on the carpet? She said, yes we always do that. We laughed, she laughed and it made the whole dinner funny. We couldnt believe it. We started saying, I thought there was a hole in the floor and this is what you waitresses do, pour stuff into the floor hole.