The act of clapping a girls ears as she is filating you. Which, if done correctly should disorientate her and as you cum you bang your chest repeatedly much like an ape.
Wyatt: Dude you'll never guess what I did last night!
Adrian: What?
Wyatt: I orangatang punched this little skank right as she was finishing sucking me of and I squirted all over her face while beating my chest! Yolo!
Word Origin and Etymology
According to the internet, "Orangutan arms are one and a half times longer than their legs. When stretched out to the sides, an adult male orangutan's arms may measure 213 cm (7 ft.) in length." Orangutangular is a combination of the orange primate, "orangutan", also spelled "orangutang", and the Latin suffix "-ular" used to form an adjective from a noun.
LJ: Let's take a selfie in front of insert landmark! Which one of us should take it?
KD: I'll do it -- my arms are orangutangular!