How about u go for a drink with some friends and pretend to be drunk and flash to the waiters serving you the drinks by unbuttoning your shirt
I do this often with my gf
Or how about you go for a movie and flash the people/couples sitting next to you...If a couple u can tease the guy showing ur deep cleavage or squeezing your boobs and biting your lips
I like making out with my girlfriend in movie hall and teasing other people showing my girlfriend off...people watch her big boobs with open mouth more than the movie!!!