It should be done during sex. Compliment her. This could mean putting some music on, lighting candles or even giving her a nice long back rub. Talk her through it by saying some dirty things to her so she really gets turned on and keeps going. Hold her waist.
You can also try doggy style, as this will allow you to get in especially deep. While bang-on is too sensitive, those two sweet spots will make sure that she takes a licking and keeps on ticking, thanks to the bulbs hidden just beneath. If you really want to give her the best orgasm ever, you will definitely need to get her relaxed first.
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