A second occurence a full moon during a calendar month is called "blue moon".
On July 31st you can see a blue moon.
by Nico Edtinger August 3, 2004
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Verb

Taking very large doses of diphenhydramine, a anti-histamine over the counter allergy remedy, to experience sedation and vivid visual and auditory hallucinations. Abuse of diphenhydramine incredibly dangerous because it puts you in a state of pure delirium. Long term abuse of diphenhydramine has been linked to brain tumors.
Person A: Lets go over to Peter's house.
Person B: No way man that guy is blue mooning on Benadryl. He is Insane!
Person A: You're right people shouldn't be getting high off allergy medication.
by Bluemoon shine September 4, 2010
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When a smurf moons you
JohnsonHey, look at that smurf, it's mooning us.
RichardNow that's a blue moon.
by Egolistick November 19, 2004
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Ice cream flavor often compared to fruit loops. Color of ice cream is, of course, blue.
I set out to pick up a pint of chocolate ice cream, but returned with a quart of blue moon.
by dave the sconnie March 8, 2007
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Getting fucked in the ass and indefinitly almost cumming and never getting there...
"I gave her ass such a pounding last night but all she got out of it was a blue moon...."
by Belhol42 February 22, 2023
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Unprovoked crippling shooting arse pain you get every now and then (once in a 'blue moon') . Feels like someone is stabbing you in the arse hole for 10 seconds.
Lucy: Arrgghhh!!

Becky: What mate?!
Lucy: feels like someone just stuck a javelin up my butt!
Becky: That'll be a blue moon mate
by MommaGeee April 9, 2021
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