and she was n't just kissing him : she hitched up her skirt and slid a long , slim leg over him , apparently oblivious to the taxi driver , pressed into him , and kissed his face , his neck , and slid her hands up his shirt until he could n't speak or think , and when he came to pay outside his flat , his words came out thick and stupid , and he not only did n't wait for the change but did n't even check what was in the wad of notes he handed the driver .