Peds!

In numbers they are like lemmings. i love the way they stand and stare, like day of the living dead at times

taking the Northern Line does simply just that!

I find the best way to deal with it is to wait until they're right next to you then scream at them....see how high they jump.

I love doing that but also a bit risky as that increase a chance of an serious injuries if the peds decided to jump toward you in surprised, thought it's terribly hard to resist making offending peds jumped.