purple moon

Special name given to the blue moon of April, following the pink moon early in the same month.

Purple moon is extremely rare. You've got to see it! That only happens once in a purple moon.

by cosmic user January 25, 2020

once in a purple moon

An extremely rare occurrence, rarer than 'once in a blue moon'.

A particular team winning the championship happens once in a purple moon. A total solar eclipse seen from Europe happens once in a purple moon.

by cosmic user January 24, 2020

purple helmet moon man

slang for penis

i want to send my purple helmet moon man on a cave diving exploration in your vag.

by iroc camaro March 2, 2009