"You must learning french before."
Probably intended to be a translation of the expression 'hot beef injection', which refers to the insertion of a penis into one of the bodily orifices.
see: hot beef injection
background: HOT BEEF INJECTION!!!
Maxim Aug '04
Hiroki69: do you know HBI STEAKS?
Karinna: HBI?? no, what is that
Hiroki69: HOT BEEF INJECTION