well, "sur-" in french means a lot of things, alone or as a prefix : on, over, more, about, upon, onto, against, ... So I'm pretty sure there is a pun intended

well, "sur-" in french means a lot of things, alone or as a prefix : on, over, more, about, upon, onto, against, ... So I'm pretty sure there is a pun intended here. About "surbooker", funny thing is that "booker" is literally the english verb converted to french verb (hence the -er suffix). Even if it is well used in modern french, it still is an anglicism.