Half of once? You ate a few bites and couldn't take it anymore? I'd believe that; they weren't very good.
The first time my wife and I ate there we noticed all of the Blokes (British) staring at us. We decided it was because we were eating our hamburgers with our hands while the Blokes were using knives and forks, as usual.
Yes I was hoping that sarcasm would be evident. They were awful. I don't know what they used for meat but it tasted offal :) If I recall the burgers at Wimpy's were sliced out of a can.
I can see you getting the look not using knife and fork LOL.