Anyway, a splitter.
Kinda like a scab, only less so. You & all your mates agree not to drink in a bar cos the barman pissed you off. One of your mates is seen leaving said bar half cut. Splitter.
You're all watching Manny vs mayweather, one person halfway through starts supporting mayweather as he's winning & starts saying he's the greatest boxer of a generation. Splitter.