When you find yourself completely and utterly lost, either geographically, intellectually, or emotionally. This phrase comes from the idea that when a ghost wakes up, it is entirely disoriented, and may utter the phrase, "Wow, I'm so lost".
GhostTina: "OH my gosh, where am I?!"
GhostRory: "Tina! You're a ghost!"
GhostTina: "Wow. I'm so lost!"

Ghost Rory: "Yeah, Tina, there's an expression for that. Al ice calls it being 'lost as a ghost'"
by al ice July 13, 2016
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The act of losing a condom off the penis of the man into the vagina of the female and retrieving said condom back onto the memeber and continuing intercourse
Shirley: so how’d it go with Gary last night?

Stacy: yeah the night was ok, but he got a little weird when he pulled the lost ghost on me , think I might be preggers...
by Tom joe and will and Archie November 15, 2017
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