It is a combination (portmanteau/neologism) of the words Quarantine and Thanksgiving. Due to the current COVID-19 pandemic, this can be viewed as a novel holiday in which Thanksgiving is celebrated during a quarantine typically accompanied by virtual parties and get-together via Zoom or Skype. Social-distancing and a minimal number of guests are urged for such a holiday, but not always abided by during such times like those of COVID-19.
John: Are you excited for Quarantinesgiving on Zoom?
Mary: Not really, this is sad and depressing, I wish we could be in person, but I guess it’s better than nothing.
John: Hang in there, we can enjoy a virtual meal, toast, and good chats amongst our family and friends while keeping safe and not spreading this damn virus.
Mary: Okay, you’re right! I guess I didn’t think of it that way; in that case, Happy Quarantinesgiving!!!
When you try something new during or due to quarantine out of boredom, general curiosity or both. Mostly things that you don't want the public to know/see.
I was quarantrying to grow a moustache but I ended up looking like Borat, Never doing that again.