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

Conversation piece 

Telling your friends about a girl you screwed

She liked being( fucked ) in the ass she was a good conversation piece of ass

Conversation piece by Rudeabaker September 4, 2017