person A: Have you ever rode on a roller coaster?
person B: Yes when I was young I did all the time_comma_ but I think after I turned 18 I got this weird fear of being so high up in the air. What about you?
person A: I hate riding them_comma_ but i used to machine components for their drive chain when I was a machinist.
person B: Wow thats really cool! You must be happy to know about that stuff its interesting!