"Mustn't Masturbate Merry Christmas" is a challenge given to mostly men that revolves around that masturbating for all of Christmas Eve and Christmas day. Those who fail are forced to become elves, working in Santa's workshop for the rest of their lives. Those who pass, however, are given 30 minutes to do what they'd like with Mrs Claus, Santa's wife. Most, however, tend to pork her.
Person 1: Why have you been so down recently?
Person 2: I don't know. I just can't find the holiday spirit.
Person 1: Just participate in "Mustn't Masturbate Merry Christmas"!
Person 2: What's that?
Person 1: *shows them Urban Dictionary definition*
Person 2: Don't ever talk to me again.
Person 1: *commits suicide*
by Your Materfamilias December 24, 2018
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1. Said when one is sabotaged/0wned/h4x0rd/etc around the Christmas season.

2.Also works with other holidays
1. "Oh, you got into a wreck? Merry Fucking Christmas!"

2. We got salmonella from those eggs. Happy Fucking Easter!

2a. What? Y2K bug!? Happy Fucking Millenium

and so on and so on
by AnatomyIsDestiny December 26, 2005
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A perfectly acceptable christmas wish between friends and estranged relatives. However, if refused warrants expulsion from ones facebook friends list.
Abe: Merry Fuckin Christmas Ashley, and God bless.
Ashley: Thats inappropriate Abe!
Abe: Wow bitch don't big league me, bitch.
Ashley: (No Response)
by GoldMiner January 13, 2010
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a very smelly christmas time or a christmas which was complete and utter crap has no links to alan perry!
it was a fucking merry perry christmas!
have a merry perry christmas u ass hole!
by miero kun3 January 28, 2005
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Give people who just gave you worst presents.
Guy: here’s your present

Guy2: thank you
Guy: sike it’s none
Guy2: merry Christmas but Fuck you
by S0900 December 10, 2018
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