Forgery is argubly a more serious offence than fair doging - something outside the off-duty officers juristiction.
Having said that I've thought about doing something similar on one occasion. I even contemplated actually becoming an inspector on Metrolink at one stage after hearing about kids who throw a woman off a tram because she asked them to stop throwing popcorn at her.
Wouldn't happen on my watch. I'm a big guy.
