conversation piece 

any type of decoration or accessory that sparks interest or curiousity among first-time onlookers.

Often they will ask questions regarding its origin, how you acquired it...etc. , thus leading to a conversation.

"I don't know how you got that Model T Ford in your living room, but I gotta say it does make an intersting conversation piece!"

conversation piece by polo September 6, 2004

Post Convention Depression Disorder 

A condition affectiong conventioneers upon returning home. Symptoms include hangover (usually on the 1st day after return from convention) , lack of satisfaction in life because you're not at convention and checking the calendar every day to see how long until the next convention. Sufferers often write inconsequential messages on facebook or texts to other sufferers. This temporarily seems to provide some relief, but the effect doesn't last.

Sorry, I'm just not happy. I think I have Post Convention Depression Disorder.

Post Convention Depression Disorder by Chim007 April 13, 2011

converfriendsation 

It's the perfect easy flow of conversation with a best friend. I speak, then she speaks, I speak, then she speaks. It’s like the tick tock of a grandfather clock.

My best friend and I have the perfect converfriendsation. I speak, then she speaks, I speak, then she speaks. Our conversation flows easily like the tick tock of a grandfather clock. Real relaxed converfriendsation.

converfriendsation by suzgirl January 4, 2018

convenience fee 

A fee added on top of the original fee due to the ease of payment.

"We noticed it was too easy for you to give us your money, so naturally, we'll need you to give us more. Therefore, you have been assessed a "convenience fee".

convenience fee by Fred Sampson May 21, 2018

conversation hijacker 

One who jumps into a conversation un-invited, often for attention.

George: "Hey, you see the game last night?"
Justin:"Yea, it was-
Kyle:"I LOVE FOOTBALL!"

Kyle is a conversation hijacker.

conversation hijacker by Georgey A. March 16, 2008

convenient odinsleep

A well timed nap for avoiding stressful responsibilities, emergencies, and scorn from friends/family members.

When I confronted my dad about me being adopted, he fell into an annoyingly convenient odinsleep and was unable to answer my questions.

convenient odinsleep by ragdolljane July 10, 2012

Biscuits and stimulating conversation 

Commonly known from a Harry Potter fanfiction, Potter, this means doing the frick frack, or sex.

"I spent my Christmas having biscuits and stimulating conversation."

Biscuits and stimulating conversation by JaimiePotter December 28, 2019