noun: projaculator; plural noun: projaculators
a: something used for making ejaculation calculations, in particular an electronic device which attaches to the erect penis which then provides the specific ejaculation velocity to a handheld device.
b: a person who ejaculates with such force that the blast radius is substantially larger than an average ejaculation.
"My God Fred, my last boyfriend was a dribbler, but you are a projaculator!"
"I'm sorry about the wall stain mom. I was unaware that I was a projaculator."