Some school buses have a sticker / sign on the back that says “I stop for railroad crossings” and can have a stop sign on said sticker.

You make it sound like all of these items are mutually exclusive…

Yahoo! Answers is the best source for medical information.

https://youtu.be/EShUeudtaFg

You’re among friends here.

Ah, the Dinosaurs solution.

Ah, this comment provided needed context and sources to support the claims outlined above! Thank goodness the Internet is forever or knowledge and a sense of community like this would be pointless!

/s