I think we can all safly say the are nasty, just from one experence of mine.
Me and my flat mate are walking back up from town past our local chippy to see about 6 12 year old belfast chav kids sitting on the side of hte road. Nothing unusual for a saturday afternoon (even in the studenty bit of belfast). 3 of them had portions of chips, which smelt pretty good, and the other 3 had rustler burgers.... We proceded to see the 3 kids with the burgers eat them straight out the packet!! (cold from the shop next door)
Needless to say iv seen new lows in diet...