Commonly used referring to 4 lip piercings on the lower lip ( 2 on each side) , sometimes called viperbites or double snakebites.
person no.1 : " Hey man nice double snakebites, when did you get them done? "
person no.2 : " Uhm I was told these were called Dragonbites? "
person no.1 : " Ah well, theres so many different names for lip piercings these days, its ridiculous"
person no.2 : " I know right? . . . Anyway I just got them done "