Much like the traditional act of a man giving a woman a faceful of cum, but characterised by a vigorous display of effort and release. In doing so, the man has an
expression and makes a sound much like
Jean Claude Van Damme in those slow motion close ups of his face when he performs his big finale kick on the 'bad guy'.
Especially
appropriate when copulating with a lady of loose morals and an a voracious appetite for all manner of sexual endeavour (AKA "a good girl").