Originated by GI's in Japan. Moose is GI slang for the Japanese word Musumei which means girl. Some Japanese girls use it as slang for theri vagina.

Properly spelled Musu

My wife is Japanese this usage goes back 60 years
GI to another "You should see my little moose".
by Otiose January 30, 2008
The act of shitting and then ejaculating on someone or something
Guy 1: "I really feel like trying something freaky tonight."
Guy 2: "I can moose on you if you want."
Guy 1: "Alright man, just don't tell my girlfriend."
Guy 2: "I can moose on her too."
by BootyMasster420 October 13, 2014
When you're having sex with a chick doggie-style and you two are facing the door and you yell real loud: "Moose!" The chick will then pull her head up and have a wide-eyed stupid look on her face. Right at that moment, put your hands behind her head with your fingers pointing upwards to look like antlers as your friend bursts in and takes a picture of her looking like a moose.
Dude, we moosed the hell out of that slut that you railed...
by Pellican January 30, 2009
1)n. A Canadian woodland quadra-ped, has flat antlers but loses them every summer
2)n. someone who is crazy, or just said something or did something crazy
3)adj. discribing someone who resembles def.2
4)v. to play video games, to make cookies (or bake in general), have sex

pl.) moosi (mooss-î)
1)The other night i almost hit a moose.
2)Did you see him dancing? hes such a moose.
3)That was such a moose thing to do.
4)Last night i moosed with your sister. (all may apply)

pl.) Wow those weird kids are a bunch of moosi.
by Moose face...cakes October 05, 2006
The majestik møøse is one of the mäni interesting furry animals in Sweden. They frolik in the løveli lakes. Mind you, møøse bites Kan be pretti nasti. But wi nøt trei a høliday in Sweden this yër?

(Seriously though, the word "møøse" is (obviously) a corruption of the word "moose" used in the subtitles for the opening credits for the movie "Monty Python and the Holy Grail".)
"A Møøse once bit my sister... No realli! She was Karving her initials on the møøse with the sharpened end of an interspace tøøthbrush given her by Svenge - her brother-in-law - an Oslo dentist and star of many Norwegian møvies: 'The Høt Hands of an Oslo Dentist', 'Fillings of Passion', 'The Huge Mølars of Horst Nordfink'... We apologise for the fault in the subtitles. Those responsible have been sacked."
by otaku sempai kun December 27, 2013
A HUGE monster of a baby (usually turned into a handsome man when he grows up, but still kind of dweeby). Verbiage used typically in areas like Simi Valley, CA.
"Brandon was the biggest Moose the hospital had ever seen!"

"Who knew that Moose would have grown up to look like that."
by Penguin <4 November 25, 2013
A very beautiful girl with a bright personality. Shy on the outside, and very conservative. Gorgeous, sexy and outstanding !! Loving and kind. With a personality of gold. She's an amazing lover ;)
Guy: did you see moose today ? Guy #2: Yeah she's FIINEE!!! I'd tap that. Girl: Sorry boys... shes my moose!
by ArtistTrappedWithin November 23, 2011
verb. Grabbing a woman's breasts. The term is in contrast to grabbing her rear end, which would be 'goosing'. Usually accompanied by a loud shout of "Moose!"
She wasn't paying attention, so I moosed her.
by Sarah Krentz February 06, 2008

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