Reagan,
I think they are referring to the fact that YJs, during the spring and summer, collect protein and feed it to their brood. That is why it is not uncommon to use fish in YJ traps. And it works pretty well.
Jim Altmiller
I can understand the "meat" part.
Yeah, it's not the "meat" that's riling me up, it's the "bee" part. Especially because, with a handful of exceptions, not eating meat is one of the definitions of being a bee. Generally, wasps are meat eaters, bees are pollen eaters, so unless we are talking about vulture bees, the phrase "meat bee" is a totally contradictory.
Beekeeping clubs etc. though, keep adding to the confusion by using yellow and black bees, as do the cartoons. Bees are not yellow and black. They are brown and black, or they are brown and dark brown, or they are black and grey, or they are silver grey. Honey bees are never yellow.
You know what drives me crazy even more than that, is the continued use of those totally fake Winnie the Pooh aerial honey bee nests in bee-related graphic design, the ones that look like bumpy tan bald-faced hornet nests. I can't stand those! What was A. A. Milne thinking?! Although to be fair, it's not a like a bald-faced hornet is really a hornet, so I guess we're all guilty of something.