I'll go first: You know you're a railfan when you're able to notice when people get rail industry terms wrong and it irks you. Now then, lets see what little habits and nuances, however serious or non-serious, y'all can come up with on this one.
Or in my case when the first episode aired and within ten seconds I blurted out, "Annie and Clarabel aren't four-wheelers!" with the same mixture of contempt and fury that some people express when they see the Union Flag flying upside down.
When your riding onboard a northern service from man vic to leeds thinking, hope to see a 101 at some point...
I saw a caboose in full operation in Norfolk, VA!!!! For those who don't know is that caboose operations NEVER HAPPEN in this area or at least next on the old Virginian main line.
... someone says a train goes choo choo and you just get filled with rage you literally buy an air horn, blow it next to them, and say this is what they used to sound like.