When a marginal amount of water comes out of a water-bottle while being drunk by a person. The water then spills onto the person's face in a cumshot type manner and usually soaks the top portion of their shirt and lower bits of their hair if they are a girl or guy with long hair.
"DUDE!!! You just got a water-bottle cumshot!!!" *as water drips down their chin*
by watershot_girl November 18, 2008