Does she a) just open her mouth for it and then run to spit it out as fast as she can, basically checking the CIM box, or b) play with herself while she moans and begs for it in her mouth, sucking out every last bit, getting some on her lips, face and tits and rubbing it around before she finally goes in to clean up (or some variation of that)?  I don't care if she swallows or not (though swallowing is very hot) but like anything else if it's done with enthusiasm and passion it's awesome, otherwise it's silly and awkward.