i guess you can call this ann opener but its how you see fit. I do this when i see a shy person or someone who looks really mad or bitchy, or annoyed.
i saw HB7 being hit on by a dude who, i bet she though was hot but turned out to be fruit, (like i like to say looks good from a far but far from good) anyway i igot close enough to hear waht they were talkin about which is key something really short. then i say the the dude:
me:"sorry dude i lost you in the crowd." turn to the girl i hope he didnt talk about X___X whatever you over hear. just let the girl know you knw him.
dude: do i know you?
me: i wasnt talking to you i was talkin to her.
dude:wtf
me: to the gir " i thought you could use some help lets go somewhere else.
HB:thanks whats your name? IOI rite?
thats all i did and it works like a charm. even if was her boyfirend thats a great way to dissarm him.