The song means tht everyone has an urge to kiss the same s*, and that its not wrong to it just happens, and just cos you do kiss the same s* don't mean uem gna turn lez or anything cos its only one kiss and its not going to change your life or anything.
I think she made this song to go with whats going on with our sociaty, because there are lots of people kissing the sme s* these days.