1) Information and intelligence that google™ are unable to pick up i.e. not a part of the googable world = ungoogable
2) A thing or event that you can't define the nature of.
3) An experience or feeling that you can't recreate.
When a girl and/or mature women couldn't possibly give you a boner. Usually mentioned amongst men who are discussing wether they would engage in sexual relations with a woman or not.
Person 1: Dude, what do you think of Mrs. Moreland? I bet she's a cougar.
Person 2: Dunno bro, I don't think I could handle that bitch. She's unbonable for me