I read about the boobie flask just now and here’s what I have to say: DAMN IT! I’ve been doing this a while now, but with Ziploc baggies. Fill two about a quarter of the way with Captain Morgan and lay one in the bottom of each cup. Buy a Coke when I get into the ball game/concert/hockey game/ whatever, hit the ladies for a little mixing in private and I’m good to go. This has worked for me for years, but of course I’m mostly bitter that I didn’t take it a step further and invent this myself.