I'm gonna be working on the RAILROAD
all the livelong day.
The Big Bang Theory Season 10, Episode 15
...um, I embarked
on a RAILROAD journey of healing...
The Big Bang Theory Season 8, Episode 1
You'd have to drive a RAILROAD spike into
his brain for me to beat him at checkers.
The Big Bang Theory Season 2, Episode 11
...an outdoor museum
featuring 43 RAILROAD engines, cars...
The Big Bang Theory Season 4, Episode 6
There are dozens of RAILROAD crossings
you have to blow the whistle for.
The Big Bang Theory Season 10, Episode 15