Was this flirting or being sarcastic?
So me and my friend were at 6 Flags the other day and we were on a roller coaster and we look down at these two really hot guys and they were kind of staring and laughing/smiling and I thought it was the people behind me. After the ride we went in line again and they were on the roller coaster and they were looking at us still. A few seconds later they both wave down and smile at me and my friend. Is that just sarcasm or is that actual flirting?