Cum Drop
A cum drop is in fact a large droplet of semen that typically falls from whatever place the man has just deposited it. Usually this will be falling from either the vagina or the chin/mouth as typically the man will deposit his semen on or in these places. It is rare to get a cum drop off of the breasts as generally that semen should be rubbed around and spread thin over them.
Man, the other night I was fuckin' my girl in her pussy right, and she was on top of me and I blew my nut all up deep inside them beef curtains! Then she got up to get off me and I got hit by a huge fuckin' CUM DROP right on my thigh!