The act of rubbing jizz in a circular motion on a person's forehead immediately after cumming on it with your index and middle fingers. Just as the blue-butted monkey did in the lion king after simba was born.
After a man cums during a handjob or blowjob, the other person takes the cum and wipes it across the guy's forehead with their thumb while playing "Circle of Life" for background music.
When a man cums on a woman's bosom then, using his thumb, removes the cum from her chest and wipes it across her forehead. Then, in a hushed whisper the man says "Simba" as he smears the cum.
When you finger a girl during her period and then wipe the tip of your finger to her forehead leaving a blood smear. This is similiar to when rafiki from lion king smears paint from his finger to simbas forehead like in the movie The Lion King.