When you've met someone numerous times, sat in their flat watching boxing with them, been on a night out and bought them a drink and given them a lift in your car and when you see them out again, they go to introduce themselves to you as if you've never met.
'Hi, I'm Lewis nice to meet you' (after all the above): you've then been 'Posner'd'
by Neyiyey September 13, 2014
Get the Posner'd mug.