So hot watching her work on him. Looks like she was probably sucking him for a while before the clip, the way he came soon and with so much cum. Either that or he just has a really sensitive cock...she clearly knows how to edge him with a mix of throat and gently licking his head.
I have a similar idea about the video as sixincher. Pull back that significant foreskin and do some work on the un-exposed cock head. But with such a technique he would have probably blown his load most likely even quicker. In the case of this bj flick, once she takes him deep at the 1 minute mark he cannot hold out any longer.