A threesome involving a woman spitting a load of cum from one dude onto the other guy.
More descriptive Explanation: Two gentlemen and one woman. The woman is giving one man a fellatio, while the other man starts complaining or isn't interested. Upon ejaculation into the woman's mouth, she then turns around to spit it at the other man. Bam, you're hit by a hail storm.
The landscaper told me I have an armadillo problem digging up holes in my yard. He recommended peeing on the holes to drive them away. I took it a step farther and gave them a Chocolate Hail Storm!