"Cover Me"

Your boss asks if you could cover her shift next Saturday and to work more hours in general so she can free up more of her time, but you tell her you'll think about it. But she really wants an answer now. She'll promote you to bar manager and give you a pay rise! No? That still won't twist your arm? Well, what is it you want!? She then clocks on to you staring inbetween her blouse at her cleavage.. so that's what you want...