Measure out 1/2 oz dry vermouth for a 1:5 Martini. Empty bottle of gin (1 1/2 oz) and dispose of bottle. Go to backstock closet and discover that I have no more gin of any kind, including genever and old tom. Turns out a 1:3 Martini is pretty nice. Now for a small Manhattan...
EDIT: Turns out my 5 mo old Labrador Retriever didn't really enjoy her sample of my unattended Manhattan. Probably has sorority girl tastes.