When you're doing a girl from behind, you cum in her hair and then arrange her hair into a Donald-esque comb-over, then when she turns around in approval, you smack her and yell, "
you're fired!" If you can do the snake hand, arm motion that
the Donald does on The Apprentice, it's a bit more
effective.
There was this one time, me and my girl were doing it and I
accidentally came in her hair, then tried to
get it out. But it just ended up looking like
Donald Trump's comb-over. It was pretty fuckin funny.