The largest portion of a man's ejaculate when seen from above. Usually accompanied by other drops known as the little islands. It is called the big island due to its visual similarities to the Hawaiian Islands. When a man ejaculates onto a woman's body, face, or other nearby linens the final product will almost always resemble the Hawaiian Islands.
Wow last night was awesome, when I finished I put the big island right on her face.
Sweetie, do you want the big island on your face or your chest?
That chick is hot, I'd drop the big island right on her face.
Wow she needs the big island right now!