It was 12am in a dark alley and there was nobody about. That isn't really PDA as such.
I'm talking sitting in the middle of a packed town centre or restaurant, kissing and just being inappropriate infront of people.
edit: ha. Also

why you gotta rag on me bro? Scousers aren't that bad on the most part. I was in Manchester last night talking to some disgusting Manc who was drunk and kept slating me. Not impressed.