First things first: Before your date arrives (if you're bottoming) do your due diligence and be ready for a great, spontaneous night.
If that isn't possible and you have to take 15 minutes or so - that's fine. I'm usually a top and I'm going to be just fine chilling for a bit. I'll be able to get right back to the mood with no problem. If you love rimming, you're going to be patient while your bottom takes 15 or so to get things right.
A top doesn't need to be bored or just sitting there waiting. Here are some things I do while waiting.
* Set up some music, and dim all the lights around the house.
* Put out a few candles - get them lit.
* Turn down the bed - adjust window covering / shutters - shades.
* Get two glasses for some wine.
* Cut some strawberries.
* Use the other shower to make sure YOU are on top of YOUR game & ready.
* Do 50 crunches and push ups.
* Put on a fresh pair of boxer briefs or whatever you like.
* Kick back against the headboard with a sly smile.
* You're both ready now for one hell of a night. The 15 minutes are a breeze.