Party-Reaper 

A Party-Reaper is someone that joins a playstation,xbox party, or voice call that nobody likes and often says snide remarks that "kill" the voice activity or cause everyone in the chat to go silent out of awkwardness or just pure hatred.

It could be said that the Party-Reaper is there to claim the soul/life if the party.

"What a f**king Party-Reaper, just had to be a prick"
"Ah speaking of the Party-Reaper, "(everyone would then go quiet due to awkwardness or hatred)

Party-Reaper by Lego man² January 16, 2021

Reaper Party 

Come from the term " Grim Reaper".
Where come people get together and celebrate when somebody they don't like dies.

Let's have a reaper party.

Reaper Party by Judge dredd7 January 16, 2012

Party Raper 

Someone thats trying to convince or force someone else to go partying. And/or get drunk.

John: common man you've got to go to that party with us!
Adam: Seriously man i don't want to, I've work tomorrow and i really don't have time.
John: Fuck work man we're counting on you! You've got to go with us!
Adam: What the fuck man! you're such a party raper!

Party Raper by Sitrec October 17, 2010