When a male ejaculates in the air above his partners' head, allowing gravity to let the sperm fall on the head, lashes and shoulders of his partner like fresh snow.

When its actually snowing on Christmas morning.

....something that never happens in Mexico.

A "White Christmas" or "Stocking Stuffer" is when you sneak downstairs on the night before Christmas - when not a creature is stirring, not even a mouse - and pull down one of the stockings hanging from the chimney with care, place the stocking over your penis, jerk off in it, and then hang the stocking back up above the chimney.

On Christmas day, before the receiver wakes up, you jerk off until you are about to cum. Right before you cum you wake the person up by smacking them in the face with a mistletoe, and start singing, ''White Christmas'' as you cum on their face.

Partaking in the illegal use of narcotics which come in powder form and have a white color, usually cocaine or m-kat. When this act is performed on Christmas day then a white Christmas has been achieved

Getting high and fucking the turkey in front of your whole family while the Christmas tree is in your ass and the whole thing is being live-streamed.