short for "she's too young for you
bro," the expression popularized by the TV show
Jersey Shore, Jerry LaVigne Jr. and the facebook group "If she ______ she's too young for you bro" that collected hundreds of thousands of likes and tens of thousands of wallposts within only a few days.
"if you have to pretend your penis is a
train or a plane to get it in her
mouth styfyb"
"if she's looking up this
definition, then styfyb!"