Brandy and Babycham. Whatever happened to that? And for a change: whisky and Lucozade! Your drink has more style than those.
Sweet Martini and Lemonade sounds sophisticated and retro. Go for it, you may be the first in a generation and start a new trend.
And whatever happened to the other numbers of Pimm's? There used to be several, each number had a different spirit base.
And as for that liqueur which had a coffee bean put in the glass, whereupon you set fire to it....Sambuca, wasn't it?