8 quick, short shallow thrusts then 1 long deep one.
7 shorts and 2 long
6 shorts and 3 long
(getting the picture)
when you get to 9 long then start reversing the order:
8 long 1 short
7 long 2 short
6 long 3 short
Not only does this drive her wild but if the guy has problems with controling his orgasm, consentrating on the counting will help!