When a man finishes, he shoots his load in to the girl's forhead. After doing this, he draws a line across the ladies forehead with his thumb, just like Rafiki (the monkey guy) did to Simba when he annoints him in the beginning of the movie Lion King. From here comes the name of the maneuver.
In shorter form u can also just call it Simba.
I finaly did the Simba maneuver to my girlfriend yesterday, now i'm finaly a man!