The guy always pulls out straight away, like he's in a rush to show the cum dripping out. That's always a bit of a disappointment for me. It's so rare for the guy to keep his dick in for any longer than a few seconds after nutting.
On a similar note, I can understand why showing the cum dripping out is important as the "money shot", but does it really need to happen in every creampie video? In real life people also nut balls deep. Some variety there would be nice.