A sexual act completed in or around the Christmas period: after a person completes the act of fellatio, keeping the resulting semen in his or her mouth, the sucker then stands to be face to face with the suckee; the sucker then puffs their cheeks, mumbles "Christmas Blizzard!" or "Merry Christmas!", then slams their puffed cheeks with their palms, resulting in the semen spraying into the face of the suckee, not unlike a blizzard occurring in or around the Christmas period in the northern hemisphere.
"Santa Claus was highly surprised when Mrs Claus performed a Christmas Blizzard after Santa's post-present delivery blow job."
by CBEnthusiast April 25, 2014