Pull a Duffy

When someone was present for an awesome event but missed seeing it, who later, after hearing the story, retells the story to others as if they actually saw said event.

I decided to Pull a Duffy when I missed seeing the lesbians making out at IHOP at the table behind me.

pulling a duffy

Your at the bar/event with your friends and you leave without warning or saying goodbye. AKA disappearing like Kevin Duffy

Where did JR go? dont know is he pulling a duffy