The feline equivalent of the turducken: tuna stuffed into a budgie stuffed into a gerbil, with the added bonus of no cooking time necessary. The mythical existence of the tunbudger is why many cats bring home small dead birds and rodents; to help you get stuffing.
Max hoped his human brought home tuna because he already had the budgie and the gerbil for tunbudger.
coined by Twitter user LarkTheVoid in reference to Twitter user bluebirdiice
Blue: Man, I think Tubbo is just so neat
Void: Yo, no way, me too!
Blue: Wow! I'm glad we're friends so we can talk about Tubbo together Void: Yea! We're tubbuddies!!