an open relationship is a when two people like eachother, but you only call it a relationship when either partners legs are spread wide open like a pterodactyl's wings. otherwise theyre just regular-ass friends.
"yo bro i heard you and aaron were in an open relationship?"
"yeaah i mean we were last night!"
"whachu mean fool?"
"i mean me and aaron had relations when i tagged that ass wide open last night. hence open relatioship."
by markky mizzark February 02, 2008

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A euphemism describing a relationship in which one or more participates are cheating.
Dude, I heard your girlfriend slept with John, why are you still with her?
Nah, it's cool, we're in an open relationship.
by skrewler February 13, 2010

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