Hmm. I don't find that theory convincing. That sort of humor does not really fit in with their body of work, but random absurdity definitely does. Hamsters are

Hmm. I don't find that theory convincing. That sort of humor does not really fit in with their body of work, but random absurdity definitely does. Hamsters aren't really known for promiscuity. Fecundity perhaps, but then the insult is "your mother had a lot of kids"? Doesn't meet the MP standards. Elderberry wine smells no more like elderberries than wine smells like grapes, so getting from "...your father smelt of elderberries" to "he was a drunk" is quite a stretch. Why not "it means he ate too much elderberry strudel" if we're going for alternate explanations? Top marks for creativity though.