'A' Level at Discretion...
It can either mean a very broadminded girl who's up for pretty well any type of fun
Or...because there's a letter 'A' in it, it just happens to be at the top of the list and suckers you in - if you look further down the list of Enjoys it quickly becomes apparent that very little is on offer for your time with her
And of course, seeing as it's 'at discretion', any old excuse will be given not to offer it at the actual meet:
1. Ooh, you're so big
, I couldn't possibly!
2. I'm having an episode of haemorrhoids.
3. I'm constipated and this can only make things worse.
4. I'm actually a lying cow and I want to get away with doing as little for you as possible.
(It's rather unlikely she'll actually say this).