Well, the first thing that comes to mind is that this might mean you inherited some kind of food intolerance from your maternal side. Just a rather literal take on the fact it was the girls disagreeing with the food. The group of girls could have been a group of genes from the maternal side. Genes are not inherited in isolation, but in groups - the chromosomes.

The interesting thing with DNA is that they found out that the DNA is only the set of blueprints what could be produced. Problems can arise if a gene encodes a faulty blueprint. But the DNA is more clever than that - which parts become active and to what effect is covered by myriads of switches outside those genes in what formerly was considered "junk DNA." In this sense, our genetic heritage is much more flexible than what scientists originally made us believe. And from this sentence it would make sense to converse with your DNA.

Your whole body consciousness is "just" a consensus consciousness of all your cells, and the cell consciousness is interwoven with your DNA. This field consciousness interacts with your spirit consciousness to enable your experience of the physical plane.

Signing then is a method of expression. But a rock singer does not act alone, he is the most visible part of a collective. So, this might have been "the speaker" of your DNA as it seeks expression. The singer is often a strong part of "conveying the message." Maybe you also have a very confident body consciousness, looks like it thinks "it rocks."