A dick monkey is a male or female who unabashedly travels from man to man for the single purpose of using their dick for their own personal pleasure without regard to loyalty, freindship, morality, etc.
can be used in conjunction with cheese eating:
Dude, that chick is a total dick monkey.
Ya' cheese eating dick monkey!
In nature when the alpha male is mating with the females of his choice, the sneek dick monkeys come up from behind to mate the females when the alpha is not looking.
My supposed homeboy pulled a sneak dick monkey on me and tried to get at my girl when I was out of town....