Erika Jayne Bozoma Saint John On Garcelle Beauvais Quitting Rhobh

It is tongue-in-cheek, so called 'soldatenhumor'. The singer who is supposed to be a soldier compares a flower, called 'erika' in german, to the genital of his girlfriend, also named erika. Erika was published in 1938 though it was probably written sometime around 1930 (for context adolf hitler came to power in 1933).

Since a lot of us have wondered why erika looks so different, here is a side-by-side comparison of her first reunion (s6) and this reunion (s11)