Damn. I love ya man, but next time lock your bike to something, not nothing. Something super heavy and not-easy-to-pick-up-and-carry-away.
This always works for me.
I have an early 70's Ibanez P-bass, made from some kind of Asian OAK that weighs about 60 lbs; this might work. I very nearly beat a guy to death with it one night at a gig, but fortunately, I was restrained. (The guy was being more than just a total dick.)
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● 1971 Grandis SL ● 1972 Lambert Grand Prix frankenbike ● 1972 Raleigh Super Course fixie ● 1973 Nishiki Semi-Pro ● 1979 Motobecane Grand Jubile ●1980 Apollo "Legnano" ● 1984 Peugeot Vagabond ● 1985 Shogun Prairie Breaker ● 1986 Merckx Super Corsa ● 1987 Schwinn Tempo ● 1988 Schwinn Voyageur ● 1989 Bottechia Team ADR replica ● 1990 Cannondale ST600 ● 1993 Technium RT600 ● 1996 Kona Lava Dome ●