Occurs when a male is getting a blowie from a woman.. or a poofter.
There are two possible scenarios:
1. the giver holds the sperm in their mouth and then proceeds to kiss the lucky male as they pass the sperm between their mouths. Reminder - to some this is supposed to be sexually arousing
2. When giving head, you blow really hard with your mouth cusped over the penis so the only direction the air has to go is into the penis. the penis and surrounding area then swell, and the prostate is exposed so an immediate
explosive ejaculation without orgasm occurs. Thus the term snow blow, the sperm, or snow as it is referred to here, explodes, or blows, everywhere in a splatter/
sawn off shotgun effect.