ozpozraw gave the accurate answer. Also- what's the fun in take the load out when you wanted it in so badly to begin with? Doesn't make any sense to me.
Personally, I love to get a load(s) inside my ass and continue with the rest of my day- going to work/studying/dinner with friends or family, while I feel the seed coming out of me slowly and wetting my underwear.
Also, if you got a load inside you, you should really keep it inside as a lubricant, cause you never now if there someone around you that want to load you too. As a true SpermPit I feel like I should always be prepared with natural lube inside me (unless I'm not in the mood, and than I wouldn't getting a load to begin with). So- who wants to lube me up?