"Oh Shit" moments...

^^Ed will be along shortly to tell you you should have been well away from the car doors to start with, he's right of course. What he won't tell you is that you should be riding between the tracks making "chuca chuca" noises and going "whoo whoo".

And a circular motion with your arms by your side

Puffing smoke to allow other track users to see that you are a locomotive.
Now have slightly disturbing mental image of you all linked together, skipping along tram tracks singing...Kylie Minogue - The Loco-Motion - YouTube