What is Masson?
1.
verb meaning to con someone, to tell a lie, to have the wool pulled over one's eyes, but in an amusing and charming manner. From the vernacular of Muswell Hill, North London, origin unknown.
"Oh my god - I think we just got massoned!"
'Oi! Don't you try and masson me on this, you smooth talking cad!"
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1. 
The euphoric feeling of being the first to open a jar of peanut butter and seeing an untouched surface.
Marlon had a moment of Jiffy lu.. 
1. 
What is said when you have forgotten something or someone.
OH zag a hoochy I've forgotten my hat!
See crap, hmm, darnit..